Method and apparatus for receiving cqi information and method and apparatus for transmitting cqi information

ABSTRACT

The present disclosure provides a method and an apparatus for receiving Channel Quality Indication (CQI) information, as well as a method and an apparatus for transmitting CQI information. The method for receiving CQI information includes: transmitting a higher layer configuration signaling message to a terminal; and receiving CQI information from the terminal. The CQI information is determined based on a CQI table obtained based on the higher layer configuration signaling message. With the above solutions, higher data transmission reliability and lower data transmission rate required for MTC terminals with coverage enhancement and 5G terminals can be achieved.

CROSS REFERENCE TO RELATED APPLICATIONS

This patent document is a continuation of and claims priority to U.S.patent application Ser. No. 15/934,991, filed on Mar. 24, 2018, which isa continuation of International Patent Application No.PCT/CN2016/099875, filed on Sep. 23, 2016, which claims the benefit ofpriority of Chinese Patent Application No. 201510627206.1, filed on Sep.25, 2015. The entire contents of the before-mentioned patentapplications are incorporated by reference as part of the disclosure ofthis application.

TECHNICAL FIELD

The present disclosure relates to, but not limited to, communicationtechnology, and more particularly, to a method and an apparatus forreceiving Channel Quality Indication (CQI) information, as well as amethod and an apparatus for transmitting CQI information.

BACKGROUND

In mobile communication systems, communication processes could involve alarge amount of uncertainties due to time-varying characteristics ofwireless fading channels. On one hand, in order to increase the systemthroughput, high order modulation and low redundancy error correctioncoding with high transmission rate can be adopted in communications. Inthis way, indeed, the system throughput can be significantly increasedwhen the wireless fading channel has an ideal Signal-to-Noise Ratio(SNR). On the other hand, in order to guarantee the reliability ofcommunications, low order modulation and high redundancy errorcorrection coding with low transmission rate can be adopted to providereliable communications in a wireless deep-fading channel. However, whenthe SNR of the channel is high, the low transmission rate constrains theincrease of the system throughput, resulting in a waste of resources. Inearly years of the development of mobile communication technologies, inorder to combat the time-varying characteristics of wireless fadingchannels, people can only increase a transmit power of a transmitter anduse a low-order, high-redundancy modulation and coding scheme toguarantee the communication quality in a deep-fading channel, leaving noroom for system throughput increase. With the technical advancement, atechnique known as adaptive coding and modulation has emerged, which canovercome the time-varying characteristics of a channel by adaptivelyadjusting a transmit power, a modulation and coding scheme and a lengthof data frame based on the channel condition, so as to achieve the bestcommunication effect. This is the most typical link adaptationtechnique.

In the Long Term Evolution (LTE) system, control signals to betransmitted in uplink include Acknowledgement/Negative Acknowledgement(ACK/NACK) messages and three types of indications of Channel StateInformation (CSI) for downlink physical channels: Channel QualityIndication (CQI), Pre-coding Matrix Indicator (PMI), and Rank Indicator(RI).

TABLE 1 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 QPSK 78 0.1523 2 QPSK 120 0.2344 3 QPSK 193 0.3770 4 QPSK308 0.6016 5 QPSK 449 0.8770 6 QPSK 602 1.1758 7 16QAM 378 1.4766 816QAM 490 1.9141 9 16QAM 616 2.4063 10 64QAM 466 2.7305 11 64QAM 5673.3223 12 64QAM 666 3.9023 13 64QAM 772 4.5234 14 64QAM 873 5.1152 1564QAM 948 5.5547

The CQI is an indicator of the quality of a downlink channel. As shownin Table 1 above, the CQI is represented in the 36.213 specification byan integer value ranging from 0 to 15. These integer values representdifferent CQI levels corresponding to respective Modulation and CodingSchemes (MCSs), as shown in Table 1.

In the above Table 1, QAM stands for Quadrature Amplitude Modulation andQPSK stands for Quadrature Phase Shift Keying, which are digitalmodulation schemes.

The CQI level should be selected such that, with the corresponding MCS,Physical Downlink Shared Channel (PDSCH) Transport Blocks (TBs)corresponding to the CQI can have a Block Error Ratio (BLER) lower than0.1.

Based on a non-limiting detection interval in frequency domain and timedomain, the highest CQI value a User Equipment (UE) can obtaincorresponds to the highest CQI value reported in an uplink subframe n.The CQI index ranges from 1 to 15 if a particular condition is satisfiedand the CQI index is 0 when the CQI index 1 dos not satisfy thatcondition. The condition is as follows: one single PDSCH TB has an errorrate lower than 0.1 when it is received; the PDSCH TB includes jointinformation of modulation scheme and Transport Block Size (TBS), whichcorresponds to a CQI index and a set of occupied downlink PhysicalResource Blocks (RPBs) (i.e., CQI reference resource). Here, the highestCQI value is a maximum CQI value capable of guaranteeing a BLER lowerthan 0.1, which is advantageous in control of resource allocation. Ingeneral, the smaller the CQI value, the more the resources to beoccupied and the better the BLER performance.

A CQI index corresponds to a joint information of TBS and modulationscheme, if such joint information for PDSCH transmission in the CQIreference resource can be signaled according to the corresponding TBS.And the effective channel coding rate, resulted from the modulationscheme, is the possible closest effective channel coding rate the CQIindex can represent, where the modulation scheme is represented by theCQI index and use the joint information of TBS and modulation scheme inthe reference resource. When more than one piece of joint informationcan generate equally close effective channel coding rate represented bythe CQI, the joint information having the smallest TBS can be used.

Each CQI index corresponds to a modulation schema and a TBS. Thecorrespondence between TBSs and the number, NPRB, of PRBs can berepresented in a table. The coding rate can be calculated from the TB Sand the value of NPRB.

In the LTE system, an ACK/NACK message is transmitted on Physical UplinkControl Channel (PUCCH) in PUCCH format 1/1a/1b. If a terminal (e.g.,UE) needs to transmit uplink data, the data can be transmitted onPhysical Uplink Shared Channel (PUSCH). The feedback of CQI, PMI or RIcan be periodic or aperiodic. This can be seen in Table 2, which showsphysical uplink channels corresponding to periodic and aperiodicfeedbacks, respectively.

TABLE 2 Periodic CQI Aperiodic CQI Scheduling Mode Report Chanel ReportChanel Frequency Non- PUCCH selective Channel Frequency PUCCH PUSCHSelective Channel

Here, the periodic feedbacks of CQI, PMI or RI can be transmitted onPUCCH in PUCCH format 2/2a/2b if the UE does not need to transmit anyuplink data, or can be transmitted on PUSCH when the UE needs totransmit uplink data. The aperiodic feedbacks of CQI, PMI or RI can onlybe transmitted on PUSCH.

In LTE Release 8 standards, three physical downlink channels have beendefined: Physical Control Format Indicator Channel (PCFICH), PhysicalHybrid Automatic Retransmission Request Indicator Channel (PHICH) andPhysical Downlink Control Channel (PDCCH). The PDCCH carries DownlinkControl Information (DCI) including uplink and downlink schedulinginformation and uplink power control information. There are a number ofDCI formats, including DCI format 0, DCI format 1, DCI format 1A, DCIformat 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A,DCI format 2B, DCI format 2C, DCI format 2D, DCI format 3, DCI format3A, etc.

In the LTE, it is required to define downlink control information suchas coding and modulation schemes, resource allocation positions, HybridAutomatic Repeat request (HARQ) via downlink control signaling. Thecoding and modulation schemes can be determined via downlink schedulingby the base station. Alternatively, a table of modulations and TBSs hasbeen defined in the standard. Each line in the table corresponds to anMCS index. For each MCS index, the table of modulations and TBSs definesa combination of modulation scheme and code rate, referring to the LTE36.213 standard. In essence, an MCS index is associated with spectrumefficiency. The MCS index shall be selected with reference to the CQIvalue and in practice the base station needs to consider their spectrumefficiency. Once the base station determines the MCS index, it needs todetermine resource allocation information, which gives the number, NPRB,of PRBs to be occupied by a downlink transmission. The LTE standardfurther provides a TBS table defining TBSs for each given MCS and NPRB.With these coding and demodulation parameters, the downlink coding andmodulation can be performed.

In Release 10 (R10), a UE can be configured semi-statically, via higherlayer signaling, as one of the following transmission modes, so as toreceive PDSCH data transmissions according to an indication of PDCCH ina UE-specific search space:

Transmission Mode 1: single-antenna port, port 0;

Transmission Mode 2: transmit diversity;

Transmission Mode 3: open-loop spatial multiplexing;

Transmission Mode 4: closed-loop spatial multiplexing;

Transmission Mode 5: multi-user Multiple Input Multiple Output (MIMO);

Transmission Mode 6: closed-loop Rank=1 precoding;

Transmission Mode 7: single-antenna port, port 5;

Transmission Mode 8: dual-stream transmission, i.e., dual-streambeamforming;

Transmission Mode 9: up to 8-layer transmission; and

Transmission Mode 10: up to 8-layer transmission with COMP feature.

After Releases 8/9/10/11/12, the LTE system continues evolving towardsRelease 13. In the evolution of Release 13 standard, Machine TypeCommunications (MTC) becomes a critical topic. MTC terminals includenormal MTC terminals and MTC terminals with coverage enhancement.Moreover, New Radio Access Technology (RAT), or NR, in the 5^(th)Generation (5G) of mobile communication systems has become a hot topic.

In the related standards, modulation and coding schemes of up to 64QAMcan be supported in uplink and downlink. With the development of MTCterminals or 5G terminals, MTC terminals with coverage enhancement or 5Gterminals require higher data transmission reliability, better coverageand lower data transmission rate, which cannot be fulfilled by therelated standards.

There is currently no effective solution to the above problem in therelated art.

SUMMARY

A summary of the subject matters described in the present disclosurewill be given below. The scopes of the claims are not limited to thesummary.

The embodiments of the present disclosure provide a method and anapparatus for receiving CQI information, as well as a method and anapparatus for transmitting CQI information, capable of providing higherdata transmission reliability and lower data transmission rate requiredfor MTC terminals with coverage enhancement and 5G terminals.

In an aspect of the embodiments of the present disclosure, a method forreceiving Channel Quality Indication (CQI) information is provided. Themethod includes: transmitting a higher layer configuration signalingmessage to a terminal; and receiving CQI information from the terminal.The CQI information is determined based on a CQI table obtained based onthe higher layer configuration signaling message.

Optionally, the higher layer configuration signaling message can includeat least one of the following information: a coverage level signaling, anumber of subframes occupied by Channel State Information (CSI)reference resource, a number of repetitions for a downlink controlchannel, a number of repetitions for a downlink data shared channel, anumber of repetitions for a Physical Random Access Channel (PRACH), aCQI table selection signaling, a category of terminal, a scenarioindication signaling, a frequency band indication signaling, or channelcoding type indication information. The coverage level signalingindicates a coverage level including one of: normal coverage or enhancedcoverage; normal coverage, moderate coverage or deep coverage; or normalcoverage, low enhanced coverage, moderate enhanced coverage or highenhanced coverage. The scenario indication signaling indicates anenhanced Mobile Broad-Band (eMBB) scenario, an Ultra Reliable LowLatency Communications (URLLC) scenario or a massive Machine TypeCommunications (mMTC) scenario. The frequency band indication signalingindicates different ranges of carrier frequencies. The channel codingtype indication information indicates different channel coding typesincluding any two of: Low Density Parity Check (LDPC) code, turbo code,convolutional code or polar code.

Optionally, the CQI table can include a first CQI table and a second CQItable. The second CQI table can have at least one of the followingcharacteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the second CQI table can have at least one of the followingcharacteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

Optionally, the CQI table can include a first CQI table, a fourth CQItable and a fifth CQI table. The fourth CQI table and the fifth CQItable can include one of the following combinations:

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the fourth CQI table and the fifth CQI table can have atleast one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

In another aspect of the embodiments of the present disclosure, a methodfor transmitting Channel Quality Indication (CQI) information isprovided. The method includes: receiving a higher layer configurationsignaling message transmitted from a base station; determining CQIinformation based on a CQI table obtained based on the higher layerconfiguration signaling message; and transmitting the determined CQIinformation to the base station.

Optionally, the higher layer configuration signaling message can includeat least one of the following information: a coverage level signaling, anumber of subframes occupied by Channel State Information (CSI)reference resource, a number of repetitions for a downlink controlchannel, a number of repetitions for a downlink data shared channel, anumber of repetitions for a Physical Random Access Channel (PRACH), aCQI table selection signaling, a category of terminal, a scenarioindication signaling, a frequency band indication signaling, or channelcoding type indication information. The coverage level signalingindicates a coverage level including one of: normal coverage or enhancedcoverage; normal coverage, moderate coverage or deep coverage; or normalcoverage, low enhanced coverage, moderate enhanced coverage or highenhanced coverage. The scenario indication signaling indicates anenhanced Mobile Broad-Band (eMBB) scenario, an Ultra Reliable LowLatency Communications (URLLC) scenario or a massive Machine TypeCommunications (mMTC) scenario. The frequency band indication signalingindicates different ranges of carrier frequencies. The channel codingtype indication information indicates different channel coding typesincluding any two of: Low Density Parity Check (LDPC) code, turbo code,convolutional code or polar code.

Optionally, the CQI table can include a first CQI table and a second CQItable. The second CQI table can have at least one of the followingcharacteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the second CQI table can have at least one of the followingcharacteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

Optionally, the CQI table can include a first CQI table, a fourth CQItable and a fifth CQI table. The fourth CQI table and the fifth CQItable can include one of the following combinations:

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the fourth CQI table and the fifth CQI table can have atleast one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

In a further aspect of the embodiments of the present disclosure, anapparatus for receiving Channel Quality Indication (CQI) information isprovided. The apparatus includes: a first transmitting module configuredto transmit a higher layer configuration signaling message to aterminal; and a first receiving module configured to receive CQIinformation from the terminal. The CQI information is determined basedon a CQI table obtained based on the higher layer configurationsignaling message.

Optionally, the higher layer configuration signaling message can includeat least one of the following information: a coverage level signaling, anumber of subframes occupied by Channel State Information (CSI)reference resource, a number of repetitions for a downlink controlchannel, a number of repetitions for a downlink data shared channel, anumber of repetitions for a Physical Random Access Channel (PRACH), aCQI table selection signaling, a category of terminal, a scenarioindication signaling, a frequency band indication signaling, or channelcoding type indication information. The coverage level signalingindicates a coverage level including one of: normal coverage or enhancedcoverage; normal coverage, moderate coverage or deep coverage; or normalcoverage, low enhanced coverage, moderate enhanced coverage or highenhanced coverage. The scenario indication signaling indicates anenhanced Mobile Broad-Band (eMBB) scenario, an Ultra Reliable LowLatency Communications (URLLC) scenario or a massive Machine TypeCommunications (mMTC) scenario. The frequency band indication signalingindicates different ranges of carrier frequencies. The channel codingtype indication information indicates different channel coding typesincluding any two of: Low Density Parity Check (LDPC) code, turbo code,convolutional code or polar code.

Optionally, the CQI table can include a first CQI table and a second CQItable. The second CQI table can have at least one of the followingcharacteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the second CQI table can have at least one of the followingcharacteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

Optionally, the CQI table can include a first CQI table, a fourth CQItable and a fifth CQI table. The fourth CQI table and the fifth CQItable can include one of the following combinations:

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the fourth CQI table and the fifth CQI table can have atleast one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

In yet a further aspect of the embodiments of the present disclosure, anapparatus for transmitting Channel Quality Indication (CQI) informationis provided. The apparatus includes: a second receiving moduleconfigured to receive a higher layer configuration signaling messagetransmitted from a base station; a determining module configured todetermine CQI information based on a CQI table obtained based on thehigher layer configuration signaling message; and a second transmittingmodule configured to transmit the determined CQI information to the basestation.

Optionally, the higher layer configuration signaling message can includeat least one of the following information: a coverage level signaling, anumber of subframes occupied by Channel State Information (CSI)reference resource, a number of repetitions for a downlink controlchannel, a number of repetitions for a downlink data shared channel, anumber of repetitions for a Physical Random Access Channel (PRACH), aCQI table selection signaling, a category of terminal, a scenarioindication signaling, a frequency band indication signaling, or channelcoding type indication information. The coverage level signalingindicates a coverage level including one of: normal coverage or enhancedcoverage; normal coverage, moderate coverage or deep coverage; or normalcoverage, low enhanced coverage, moderate enhanced coverage or highenhanced coverage. The scenario indication signaling indicates anenhanced Mobile Broad-Band (eMBB) scenario, an Ultra Reliable LowLatency Communications (URLLC) scenario or a massive Machine TypeCommunications (mMTC) scenario. The frequency band indication signalingindicates different ranges of carrier frequencies. The channel codingtype indication information indicates different channel coding typesincluding any two of: Low Density Parity Check (LDPC) code, turbo code,convolutional code or polar code.

Optionally, the CQI table can include a first CQI table and a second CQItable. The second CQI table can have at least one of the followingcharacteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the second CQI table can have at least one of the followingcharacteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

Optionally, the CQI table can include a first CQI table, a fourth CQItable and a fifth CQI table. The fourth CQI table and the fifth CQItable can include one of the following combinations:

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

Optionally, the fourth CQI table and the fifth CQI table can have atleast one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

With the embodiment of the present disclosure, a higher layerconfiguration signaling message is transmitted to a terminal and CQIinformation is received from the terminal. The CQI information isdetermined based on a CQI table obtained based on the higher layerconfiguration signaling message. With the above solutions, higher datatransmission reliability and lower data transmission rate required forMTC terminals with coverage enhancement and 5G terminals can beachieved.

Other aspects can be understood from the figures and detaileddescription.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart illustrating a method for receiving CQIinformation according to an embodiment of the present disclosure;

FIG. 2 is a flowchart illustrating a method for transmitting CQIinformation according to an embodiment of the present disclosure;

FIG. 3 is a block diagram showing a structure of an apparatus forreceiving CQI information according to an embodiment of the presentdisclosure; and

FIG. 4 is a block diagram showing a structure of an apparatus fortransmitting CQI information according to an embodiment of the presentdisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In the following, the present disclosure will be described in detailwith reference to the figures, taken in conjunction with theembodiments. The embodiments, and the features thereof, can be combinedwith each other, provided that they do not conflict.

It is to be noted that, the terms such as “first”, “second” and so on inthe description, claims and figures are used for distinguishing amongsimilar objects and do not necessarily imply any particularly order orsequence.

In an embodiment, a method for receiving CQI information is provided.FIG. 1 is a flowchart illustrating a method for receiving CQIinformation according to an embodiment of the present disclosure. Asshown in FIG. 1, the process includes the following steps.

At step S102, a higher layer configuration signaling message istransmitted to a terminal.

At step S104, CQI information is received from the terminal. The CQIinformation is determined based on a CQI table obtained based on thehigher layer configuration signaling message.

Here, the above steps can be performed at a base station. The aboveterminal may or may not be an MTC terminal or a 5G terminal. With theabove steps, the CQI information received from the terminal is the CQIinformation determined by the terminal based on the CQI table obtainedbased on the higher layer configuration signaling message. Hence, higherdata transmission reliability and lower data transmission rate requiredfor the terminal can be achieved, thereby providing higher datatransmission reliability and lower data transmission rate required forMTC terminals with coverage enhancement and 5G terminals.

In an optional embodiment, the above higher layer configurationsignaling message can include at least one of the following information:a coverage level signaling, a number, M, of subframes occupied byChannel State Information (CSI) reference resource, a number ofrepetitions for a downlink control channel, a number of repetitions fora downlink data shared channel, a number of repetitions for a PhysicalRandom Access Channel (PRACH), a CQI table selection signaling, acategory of terminal, a scenario indication signaling, a frequency bandindication signaling, or channel coding type indication information.Here, the number of repetitions as described above refers to the numberof one or more repetitive transmissions. The above coverage levelsignaling indicates a coverage level including one of: normal coverageor enhanced coverage; normal coverage, moderate coverage or deepcoverage; or normal coverage, low enhanced coverage, moderate enhancedcoverage or high enhanced coverage. The scenario indication signalingindicates an enhanced Mobile Broad-Band (eMBB) scenario, an UltraReliable Low Latency Communications (URLLC) scenario or a massiveMachine Type Communications (mMTC) scenario. The frequency bandindication signaling indicates different ranges of carrier frequencies.The channel coding type indication information indicates differentchannel coding types including any two of: Low Density Parity Check(LDPC) code, turbo code, convolutional code or polar code.

Optionally, the above higher layer configuration signaling message caninclude one of the following information: the coverage level signalingand the number, M, of subframes occupied by CSI reference resource; thecoverage level signaling and the number of repetitions; the number, M,of subframes occupied by CSI reference resource and the number ofrepetitions; the number, M, of subframes occupied by CSI referenceresource and the CQI table selection signaling; the number, M, ofsubframes occupied by CSI reference resource and the type of terminal;the type of terminal and the coverage level signaling; the coveragelevel signaling and the CQI table selection signaling; the coveragelevel signaling and the CQI table selection signaling; or the number, M,of subframes occupied by CSI reference resource and the CQI tableselection signaling. Here, the number of repetitions includes at leastone of the number of repetitions for the downlink control channel, thenumber of repetitions for the downlink data shared channel, or thenumber of repetitions for the PRACH.

In the following, various embodiments will be described to explain howto select the CQI table based on the higher layer configuration signal.Some more specific examples will be given below.

1. The higher layer configuration signaling message includes thecoverage level signaling. That is, different coverage level signalinginclude respective different coverage levels for MTC terminals. In thiscase, different CQI tables can be selected based on the differentcoverage levels.

2. The higher layer configuration signaling message includes thecoverage level signaling. A threshold can be predefined. If the coveragelevel is smaller than the threshold, a first CQI table will be used. Ifthe coverage level is larger than the threshold, a second CQI table willbe used. Similarly, two thresholds can be defined, resulting in threevalue ranges. Three CQI tables (i.e., the first CQI table, a fourth CQItable and a fifth CQI table, which will be referred to as “the three CQItable” hereinafter) can be provided for selection based on therespective different value ranges.

3. The higher layer configuration signaling message includes the numberof repetitions for the downlink control channel, the number ofrepetitions for the downlink data shared channel or the number ofrepetitions for the PRACH. A threshold can be predefined. If the numberof repetitions is smaller than the threshold, the first CQI table willbe used. If the number of repetitions is larger than the threshold, thesecond CQI table will be used. Similarly, two thresholds can be defined,resulting in three value ranges. The three CQI tables can be providedfor selection based on the respective different value ranges.

4. The higher layer configuration signaling message includes the number,M, of subframes occupied by CSI reference resource. A threshold can bepredefined. If M is smaller than the threshold, the first CQI table willbe used. If M is larger than the threshold, the second CQI table will beused. Similarly, two thresholds can be defined, resulting in three valueranges. The three CQI tables can be provided for selection based on therespective different value ranges.

5. The CQI table can be selected based on the CQI table selectionsignaling directly.

6. The CQI table can be selected based on the type of terminal. For sometypes of terminals, the first CQI table will be selected; whereas forother types of terminals, the second CQI table will be selected.

Finally, the CQI table can be determined according to a combination oftwo or more of the above signals and further details thereof will beomitted here.

In an optional embodiment, the above CQI table may include various typesof CQI tables. These types of CQI tables will be described below.

The above CQI table can include the first CQI table and the second CQItable. That is, the first CQI table and the second CQI table can beselected based on the higher layer configuration signal. The second CQItable can have at least one of the following characteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderater and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the second CQI table can have at least one ofthe following characteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the above CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

In an optional embodiment, the above CQI table can include the first CQItable, the fourth CQI table and the fifth CQI table. That is, the firstCQI table, the fourth CQI table or the fifth CQI table can be selectedbased on the higher layer configuration signal. The fourth CQI table andthe fifth CQI table can include one of the following combinations:

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the fourth CQI table and the fifth CQI tablecan have at least one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

In an embodiment of the present disclosure, a method for transmittingCQI information is provided. FIG. 2 is a flowchart illustrating a methodfor transmitting CQI information according to an embodiment of thepresent disclosure. As shown in FIG. 2, the method includes thefollowing steps.

At step S202, a higher layer configuration signaling message transmittedfrom a base station is received.

At step S204, CQI information is determined based on a CQI tableobtained based on the higher layer configuration signaling message.

At step S206, the determined CQI information is transmitted to the basestation.

Here, the above steps can be performed at a terminal, which may or maynot be an MTC terminal. With the above steps, the CQI information isdetermined based on the CQI table obtained based on the higher layerconfiguration signaling message. Hence, higher data transmissionreliability and lower data transmission rate required for the terminalcan be achieved, thereby providing higher data transmission reliabilityand lower data transmission rate required for MTC terminals withcoverage enhancement and 5G terminals.

In an optional embodiment, the above higher layer configurationsignaling can include at least one of the following information: acoverage level signaling, a number, M, of subframes occupied by ChannelState Information (CSI) reference resource, a number of repetitions fora downlink control channel, a number of repetitions for a downlink datashared channel, a number of repetitions for a Physical Random AccessChannel (PRACH), a CQI table selection signaling, a category ofterminal, a scenario indication signaling, a frequency band indicationsignaling, or channel coding type indication information. The abovecoverage level signaling indicates a coverage level including one of:normal coverage or enhanced coverage; normal coverage, moderate coverageor deep coverage; or normal coverage, low enhanced coverage, moderateenhanced coverage or high enhanced coverage. The scenario indicationsignaling indicates an enhanced Mobile Broad-Band (eMBB) scenario, anUltra Reliable Low Latency Communications (URLLC) scenario or a massiveMachine Type Communications (mMTC) scenario. The frequency bandindication signaling indicates different ranges of carrier frequencies.The channel coding type indication information indicates differentchannel coding types including any two of: Low Density Parity Check(LDPC) code, turbo code, convolutional code or polar code.

Optionally, the above higher layer configuration signaling message caninclude one of the following information: the coverage level signalingand the number, M, of subframes occupied by CSI reference resource; thecoverage level signaling and the number of repetitions; the number, M,of subframes occupied by CSI reference resource and the number ofrepetitions; the number, M, of subframes occupied by CSI referenceresource and the CQI table selection signaling; the number, M, ofsubframes occupied by CSI reference resource and the type of terminal;the type of terminal and the coverage level signaling; the coveragelevel signaling and the CQI table selection signaling; the coveragelevel signaling and the CQI table selection signaling; or the number, M,of subframes occupied by CSI reference resource and the CQI tableselection signaling. Here, the number of repetitions includes at leastone of the number of repetitions for the downlink control channel, thenumber of repetitions for the downlink data shared channel, or thenumber of repetitions for the PRACH.

The above CQI table may include various types of CQI tables. These typesof CQI tables will be described below.

In an optional embodiment, the above CQI table can include the first CQItable and the second CQI table. The second CQI table can have at leastone of the following characteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the second CQI table can have at least one ofthe following characteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the above CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

In an optional embodiment, the above CQI table can include the first CQItable, the fourth CQI table and the fifth CQI table. The fourth CQItable and the fifth CQI table can include one of the followingcombinations:

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the fourth CQI table and the fifth CQI tablecan have at least one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

With the description of the above embodiments, it will be apparent tothose skilled in the art that the method according to the aboveembodiments can be implemented by means of software plus a necessarygeneral-purpose hardware platform. Of course, it can be implemented inhardware, but in many cases the former is the optimal implementation.Based on this understanding, the technical solution of the presentdisclosure in essence, or parts thereof contributive to the prior art,can be embodied in the form of a software product. The computer softwareproduct can be stored in a storage medium (e.g., ROM/RAM, magnetic disk,or optical disc) and includes instructions for causing a terminal device(which may be a mobile phone, a computer, a server, or a network device,etc.) to perform the method described in the various embodiments of thepresent disclosure.

According to an embodiment of the present disclosure, an apparatus forreceiving CQI information is also provided. The apparatus can implementthe above embodiments and optional embodiments (details thereof will beomitted here). As used hereinafter, the term “module” can be software,hardware, or a combination thereof, capable of performing apredetermined function. While the apparatuses to be described in thefollowing embodiments are preferably implemented in software, it can becontemplated that they can also be implemented in hardware or acombination of software and hardware.

FIG. 3 is a block diagram showing a structure of an apparatus forreceiving CQI information according to an embodiment of the presentdisclosure. As shown in FIG. 3, the apparatus includes a firsttransmitting module 32 and a first receiving module 34. The apparatuswill be described in detail below.

The first transmitting module 32 is configured to transmit a higherlayer configuration signaling message to a terminal.

The first receiving module 34 is connected to the first transmittingmodule 32 and configured to receive CQI information from the terminal.The CQI information is determined based on a CQI table obtained based onthe higher layer configuration signaling message.

In an optional embodiment, the above higher layer configurationsignaling message can include at least one of the following information:a coverage level signaling, a number, M, of subframes occupied byChannel State Information (CSI) reference resource, a number ofrepetitions for a downlink control channel, a number of repetitions fora downlink data shared channel, a number of repetitions for a PhysicalRandom Access Channel (PRACH), a CQI table selection signaling, acategory of terminal, a scenario indication signaling, a frequency bandindication signaling, or channel coding type indication information. Theabove coverage level signaling indicates a coverage level including oneof: normal coverage or enhanced coverage; normal coverage, moderatecoverage or deep coverage; or normal coverage, low enhanced coverage,moderate enhanced coverage or high enhanced coverage. The scenarioindication signaling indicates an enhanced Mobile Broad-Band (eMBB)scenario, an Ultra Reliable Low Latency Communications (URLLC) scenarioor a massive Machine Type Communications (mMTC) scenario. The frequencyband indication signaling indicates different ranges of carrierfrequencies. The channel coding type indication information indicatesdifferent channel coding types including any two of: Low Density ParityCheck (LDPC) code, turbo code, convolutional code or polar code.

Optionally, the above higher layer configuration signaling message caninclude one of the following information: the coverage level signalingand the number, M, of subframes occupied by CSI reference resource; thecoverage level signaling and the number of repetitions; the number, M,of subframes occupied by CSI reference resource and the number ofrepetitions; the number, M, of subframes occupied by CSI referenceresource and the CQI table selection signaling; the number, M, ofsubframes occupied by CSI reference resource and the type of terminal;the type of terminal and the coverage level signaling; the coveragelevel signaling and the CQI table selection signaling; the coveragelevel signaling and the CQI table selection signaling; or the number, M,of subframes occupied by CSI reference resource and the CQI tableselection signaling. Here, the number of repetitions includes at leastone of the number of repetitions for the downlink control channel, thenumber of repetitions for the downlink data shared channel, or thenumber of repetitions for the PRACH.

The above CQI table may include various types of CQI tables. These typesof CQI tables will be described below.

In an optional embodiment, the above CQI table can include the first CQItable and the second CQI table. The second CQI table can have at leastone of the following characteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the second CQI table can have at least one ofthe following characteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the above CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

In an optional embodiment, the above CQI table can include the first CQItable, the fourth CQI table and the fifth CQI table. The fourth CQItable and the fifth CQI table can include one of the followingcombinations:

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has 2^(x) values, each CQI in the fourth CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the fourth CQI table and the fifth CQI tablecan have at least one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

In an optional embodiment, an apparatus for transmitting CQI informationis also provided. FIG. 4 is a block diagram showing a structure of anapparatus for transmitting CQI information according to an embodiment ofthe present disclosure. As shown in FIG. 4, the apparatus includes asecond receiving module 42; a determining module 44; and a secondtransmitting module 46. The apparatus will be described in detail below.

The second receiving module 42 is configured to receive a higher layerconfiguration signaling message transmitted from a base station.

The determining module 44 is connected to the second receiving module 42and configured to determine CQI information based on a CQI tableobtained based on the higher layer configuration signaling message.

The second transmitting module 46 is connected to the determining module44 and configured to transmit the determined CQI information to the basestation.

In an optional embodiment, the above higher layer configurationsignaling message can include at least one of the following information:a coverage level signaling, a number, M, of subframes occupied byChannel State Information (CSI) reference resource, a number ofrepetitions for a downlink control channel, a number of repetitions fora downlink data shared channel, a number of repetitions for a PhysicalRandom Access Channel (PRACH), a CQI table selection signaling, acategory of terminal, a scenario indication signaling, a frequency bandindication signaling, or channel coding type indication information. Theabove coverage level signaling indicates a coverage level including oneof: normal coverage or enhanced coverage; normal coverage, moderatecoverage or deep coverage; or normal coverage, low enhanced coverage,moderate enhanced coverage or high enhanced coverage. The scenarioindication signaling indicates an enhanced Mobile Broad-Band (eMBB)scenario, an Ultra Reliable Low Latency Communications (URLLC) scenarioor a massive Machine Type Communications (mMTC) scenario. The frequencyband indication signaling indicates different ranges of carrierfrequencies. The channel coding type indication information indicatesdifferent channel coding types including any two of: Low Density ParityCheck (LDPC) code, turbo code, convolutional code or polar code.

Optionally, the above higher layer configuration signaling message caninclude one of the following information: the coverage level signalingand the number, M, of subframes occupied by CSI reference resource; thecoverage level signaling and the number of repetitions; the number, M,of subframes occupied by CSI reference resource and the number ofrepetitions; the number, M, of subframes occupied by CSI referenceresource and the CQI table selection signaling; the number, M, ofsubframes occupied by CSI reference resource and the type of terminal;the type of terminal and the coverage level signaling; the coveragelevel signaling and the CQI table selection signaling; the coveragelevel signaling and the CQI table selection signaling; or the number, M,of subframes occupied by CSI reference resource and the CQI tableselection signaling. Here, the number of repetitions includes at leastone of the number of repetitions for the downlink control channel, thenumber of repetitions for the downlink data shared channel, or thenumber of repetitions for the PRACH.

The above CQI table may include various types of CQI tables. These typesof CQI tables will be described below.

In an optional embodiment, the above CQI table can include the first CQItable and the second CQI table. The second CQI table can have at leastone of the following characteristics:

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Quadrature Phase Shift Keying (QPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 78/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableare combinations of Binary Phase Shift Keying (BPSK) and code rate r,where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the second CQI table, and the first L2combinations of modulation scheme and code rate in the second CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each an integer larger than orequal to 0, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4;

the second CQI table has 2^(x) values, each CQI in the second CQI tableis represented by x bits, the first CQI table includes in total L1combinations of modulation scheme and code rate, the L1 combinations ofmodulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table include L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4;

the first CQI table includes in total L1 combinations of modulationscheme and code rate, the second CQI table includes in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or

the first CQI table and the second CQI table include in total L1=7combinations of modulation scheme and code rate, the modulation schemesin the first CQI table include QPSK and 16QAM, and the modulationschemes in the second CQI table include QPSK and/or BPSK, the second CQItable includes at least two of the first, third, fifth and seventhcombinations in the first CQI table, or at least two of the second,fourth, sixth combinations in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the second CQI table can have at least one ofthe following characteristics:

a minimum value of r is smaller than 1/1024;

the minimum value of r equals to 1/2048, 1/4096 or 1/3072;

a combination of QPSK and r=449/1024 is excluded;

the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

the second CQI table includes one combination of 16QAM and code rate inthe first CQI table;

the second CQI table includes one of a combination of 16QAM and a coderate of 490/1024 and a combination of 16QAM and a code rate of 616/1024;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when the latest CQI is based on the first CQI table and that CQI has avalue indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

the above CQI table further includes a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency, wherein when the latest CQI is based on the second CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the third CQI table;

the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

In an optional embodiment, the above CQI table can include the first CQItable, the fourth CQI table and the fifth CQI table. The fourth CQItable and the fifth CQI table can include one of the followingcombinations:

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of QPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable are combinations of QPSK and code rate r, where L3 and L4 are eacha positive integer larger than 1, r is a real number smaller than78/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableare combinations of BPSK and code rate r, where L1 and L2 are each apositive integer larger than 1, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, eachCQI in the fifth CQI table is represented by y bits, L3 combinations ofmodulation scheme and code rate other than L4 combinations of modulationscheme and code rate in the fourth CQI table are used as the last L3combinations of modulation scheme and code rate in the fifth CQI table,and the first L4 combinations of modulation scheme and code rate in thefifth CQI table are combinations of BPSK and code rate r, where L3 andL4 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4;

the fourth CQI table has r values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tableinclude L21 combinations of BPSK and code rate r and L22 combinations ofQPSK and code rate r, where L1 and L2 are each a positive integer largerthan 1, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15,and x≤4; the fifth CQI table has 2^(y) values, each CQI in the fifth CQItable is represented by y bits, L3 combinations of modulation scheme andcode rate other than L4 combinations of modulation scheme and code ratein the fourth CQI table are used as the last L3 combinations ofmodulation scheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableinclude L41 combinations of BPSK and code rate r and L42 combinations ofQPSK and code rate r, where L3 and L4 are each a positive integer largerthan 1, L2=L41+L42, r is a real number smaller than 156/1024, L3+L4≤15,and y≤4; or

the first CQI table includes L1 combinations of modulation scheme andcode rate, the fourth CQI table includes L2 combinations of modulationscheme and code rate, the fifth CQI table includes L2 combinations ofmodulation scheme and code rate, where L1 and L2 are each an integerlarger than or equal to 7 and L2<L1/2, all the combinations ofmodulation scheme and code rate in the fourth CQI table and all thecombinations of modulation scheme and code rate in the fifth CQI tableare each a subset of all the combinations of modulation scheme and coderate in the first CQI table.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

In an optional embodiment, the fourth CQI table and the fifth CQI tablecan have at least one of the following characteristics:

a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

the minimum value of code rate in the fifth CQI table is smaller than orequal to 1/1024;

the minimum value of code rate in the fourth CQI table is smaller thanor equal to 1/1024;

the fourth CQI table includes a combination of QPSK and r=449/1024;

the fourth CQI table includes all combinations of QPSK and code rate inthe first CQI table;

the fifth CQI table includes none of the combinations of QPSK and coderate in the first CQI table;

the fifth CQI table includes all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table;

the fourth CQI table includes at least one combination of 16QAM and coderate in the first CQI table;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is the highest;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than the spectrum efficiency ratios forother pairs of combinations;

among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations;

when a current CQI or the latest CQI is based on the first CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fourth CQI table; or

when the current CQI or the latest CQI is based on the fourth CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fifth CQI table.

With the above embodiment, transmissions and feedbacks associated withMTC terminals at different coverage levels can be well supported. TheMTC terminals can be well supported, with compatibility with relevantsystems and without increasing signaling overhead. The accuracy of linkadaptation can be improved particularly in the deep coverage scenario.The reliability and the efficiency of the system can be improved to thegreatest extent.

The embodiments of the present disclosure will be explained in thefollowing regarding how to determine the CQI table based on the coveragelevel of the terminal, with reference to an example of a CQItransmitting/receiving system including a base station and a terminal.

Embodiment 1

In this embodiment, a method for processing CQI information is provided.The method can be applied in a base station and includes the followingsteps.

The base station transmits a higher layer configuration signalingmessage to a terminal.

The base station receives CSI from the terminal. The CSI includes CQIinformation that is obtained based on a CQI table determined from thehigher layer configuration signaling message.

Optionally, the base station transmits the higher layer configurationsignaling message to the terminal and the higher layer configurationsignaling message can include at least one of: a coverage levelsignaling, a number, M, of subframes occupied by CSI reference resource,a number of repetitions for a downlink control channel, a number ofrepetitions for a downlink data shared channel, a number of repetitionsfor a PRACH, a CQI table selection signaling, a category of terminal, ascenario indication signaling, a frequency band indication signaling, orchannel coding type indication information. Here, the coverage levelsignaling indicates different coverage levels of the terminal. Thescenario indication signaling indicates an eMBB scenario, a URLLCscenario or an mMTC scenario, all of which are typical scenarios of NewRAT in the 5G mobile communications. The frequency band indicationsignaling indicates different ranges of carrier frequencies. The channelcoding type indication information indicates different channel codingtypes including any two of: LDPC code, turbo code, convolutional code orpolar code.

Optionally, the above higher layer configuration signaling message caninclude one of the following information: the coverage level signalingand the number, M, of subframes occupied by CSI reference resource; thecoverage level signaling and the number of repetitions; the number, M,of subframes occupied by CSI reference resource and the number ofrepetitions; the number, M, of subframes occupied by CSI referenceresource and the CQI table selection signaling; the number, M, ofsubframes occupied by CSI reference resource and the type of terminal;the type of terminal and the coverage level signaling; the coveragelevel signaling and the CQI table selection signaling; the coveragelevel signaling and the CQI table selection signaling; or the number, M,of subframes occupied by CSI reference resource and the CQI tableselection signaling. Here, the number of repetitions includes at leastone of the number of repetitions for the downlink control channel, thenumber of repetitions for the downlink data shared channel, or thenumber of repetitions for the PRACH.

The base station transmits the higher layer configuration signalingmessage to the terminal and the higher layer configuration signalingmessage can include the coverage level signaling. The coverage levelsignaling selects normal coverage or enhanced coverage.

Optionally, the base station receives the CSI from the terminal. The CSIincludes the CQI information. The coverage level signaling selectsnormal coverage or enhanced coverage. When the above coverage levelsignaling indicates the support of enhanced coverage, the CQIinformation can be obtained from the second CQI table. When the abovecoverage level signaling indicates the support of normal coverage, theCQI information can be obtained from the first CQI table. Here, thefirst CQI table is an existing CQI table having modulation order of upto 64.

In the following, the CQI tables will be explained with reference toexamples. The first CQI table can be the CQI table in LTE Release 8,i.e., the one described in the background section.

Optionally, the first CQI table can be a 4-bit CQI table in LTE Release8. The second CQI table can be one of the following schemes.

Scheme A1:

The second CQI table has r values, i.e., each CQI is represented by xbits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table. The first L2 combinations of modulation schemeand code rate in the second CQI table are combinations of QPSK and coderate r, where L1 and L2 are each an integer larger than or equal to 0, ris a real number smaller than 78/1024, L1+L2≤15, and x≤4.

A more specific example of the second CQI table is given below.

Assuming that the first CQI table is the CQI table in LTE Release 8, thesecond CQI table can be defined as shown in Table 3:

TABLE 3 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 QPSK 1 0.0020 2 QPSK 2 0.0039 3 QPSK 3 0.0059 4 QPSK 60.0117 5 QPSK 12 0.0234 6 QPSK 22 0.0430 7 QPSK 42 0.0820   8(1) QPSK 780.1523   9(2) QPSK 120 0.2344   10(3) QPSK 193 0.377   11(4) QPSK 3080.6016   12(5) QPSK 449 0.877   13(6) QPSK 602 1.1758   14(7) 16QAM 3781.4766   15(9) 16QAM 616 2.4063

Here, the numbers in the parentheses represent the indices in the firstCQI table. For example, 8(1) in the above table means that thecombination of modulation scheme and coding rate having the index of 0in the first CQI table is used as the combination of modulation schemeand coding rate having the index of 8 in the second CQI table. The samealso applies to other indices.

Scheme A2:

The second CQI table has r values, i.e., each CQI is represented by xbits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table. The first L2 combinations of modulation schemeand code rate in the second CQI table are combinations of BPSK and coderate r, where L1 and L2 are each an integer larger than or equal to 0, ris a real number smaller than 156/1024, L1+L2≤15, and x≤4.

A more specific example of the second CQI table is given below.

Assuming that the first CQI table is the CQI table in LTE Release 8, thesecond CQI table can be defined as shown in Table 4:

TABLE 4 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 BPSK 1 0.0010 2 BPSK 2 0.0020 3 BPSK 4 0.0039 4 BPSK 90.0088 5 BPSK 18 0.0176 6 BPSK 37 0.0361 7 BPSK 76 0.0720   8(1) QPSK 780.1523   9(2) QPSK 120 0.2344   10(3) QPSK 193 0.377   11(4) QPSK 3080.6016   12(5) QPSK 449 0.877   13(6) QPSK 602 1.1758   14(7) 16QAM 3781.4766   15(9) 16QAM 616 2.4063

Here, the numbers in the parentheses represent the indices in the firstCQI table. For example, 8(1) in the above table means that thecombination of modulation scheme and coding rate having the index of 0in the first CQI table is used as the combination of modulation schemeand coding rate having the index of 8 in the second CQI table. The samealso applies to other indices.

Scheme A3:

The second CQI table has r values, i.e., each CQI is represented by xbits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table. The first L2 combinations of modulation schemeand code rate in the second CQI table include L21 combinations of BPSKand code rate r and L22 combinations of QPSK and code rate r, where L1and L2 are each an integer larger than or equal to 0, L2=L21+L22, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4.

A more specific example of the second CQI table is given below.

Assuming that the first CQI table is the CQI table in LTE Release 8, thesecond CQI table can be defined as shown in Table 5:

TABLE 5 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 BPSK 1 0.0010 2 BPSK 2 0.0020 3 BPSK 4 0.0039 4 BPSK 90.0088 5 BPSK 18 0.0176 6 BPSK 37 0.0361 7 QPSK 38 0.0720   8(1) QPSK 780.1523   9(2) QPSK 120 0.2344   10(3) QPSK 193 0.377   11(4) QPSK 3080.6016   12(5) QPSK 449 0.877   13(6) QPSK 602 1.1758   14(7) 16QAM 3781.4766   15(9) 16QAM 616 2.4063

Here, the numbers in the parentheses represent the indices in the firstCQI table. For example, 8(1) in the above table means that thecombination of modulation scheme and coding rate having the index of 0in the first CQI table is used as the combination of modulation schemeand coding rate having the index of 8 in the second CQI table. The samealso applies to other indices.

Optionally, the second CQI table can have one of the followingcharacteristics:

1) a minimum value of r is smaller than 1/1024;

2) the minimum value of r equals to 1/1024, 1/2048, 1/4096 or 1/3072;

3) a combination of QPSK and r=449/1024 is excluded;

4) the second CQI table includes all combinations of QPSK and code rate,other than a combination of QPSK and r=449/1024, in the first CQI table;

5) the second CQI table includes one combination of 16QAM and code ratein the first CQI table;

6) the second CQI table includes one of a combination of 16QAM and acode rate of 490/1024 and a combination of 16QAM and a code rate of616/1024;

7) among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but one combination, is higher than or equal to thespectrum efficiency ratios for other pairs of combinations;

8) among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination, defined asa ratio of spectrum efficiency of the second combination to that of thefirst combination, is higher than or equal to the spectrum efficiencyratios for other pairs of combinations;

9) among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the second combination andthe first combination, are higher than or equal to the spectrumefficiency ratios for other pairs of combinations;

10) among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but twocombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but two combination to that of the lastbut one combination, are higher than or equal to the spectrum efficiencyratios for other pairs of combinations;

11) among spectrum efficiency ratios for all pairs of neighboringcombinations in the second CQI table, the spectrum efficiency ratio forthe pair of the second combination and the first combination and thespectrum efficiency ratio for the pair of the third combination and thesecond combination, defined as a ratio of spectrum efficiency of thethird combination to that of the second combination, are higher than orequal to the spectrum efficiency ratios for other pairs of combinations;

12) when the latest CQI is based on the first CQI table and that CQI hasa value indicating an out-of-range state, a current CQI will triggerfeedback of another CQI based on the second CQI table;

13) when the latest CQI is based on the second CQI table and that CQIhas a value indicating an out-of-range state, the current CQI willtrigger feedback of another CQI based on a third CQI table consisting ofcombinations of modulation scheme and code rate that have lower spectrumefficiency;

14) the second CQI table includes two out-of-range states: a state lowerthan the lowest combination of modulation scheme and code rateassociated with the lowest spectrum efficiency, and a state higher thanthe highest combination of modulation scheme and code rate associatedwith the highest spectrum efficiency;

15) any pair of neighboring ones from N1 consecutive combinations ofmodulation scheme and code rate in the second CQI table has a higherspectrum efficiency ratio than all pairs of neighboring ones from N2consecutive combinations of modulation scheme and code rate in the firstCQI table, where N1 and N2 are each an integer larger than or equal to2; or

16) each pair of neighboring ones from N3 consecutive combinations ofmodulation scheme and code rate in the middle of the second CQI tablehas a lower spectrum efficiency ratio than all pairs of neighboring onesfrom the first N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to 2.

An example of the second CQI table having the above characteristics 2),3), 4), 6), 8) and 11) is shown in Table 6:

TABLE 6 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 QPSK 1 0.0001 2 QPSK 2 0.0002 3 QPSK 4 0.0039 4 QPSK 60.0059 5 QPSK 12 0.0117 6 QPSK 24 0.0234 7 QPSK 44 0.0430 8 QPSK 840.0820   9(1) QPSK 156 0.1523   10(2) QPSK 240 0.2344   11(3) QPSK 3860.3770   12(4) QPSK 616 0.6016   13(6) QPSK 1204 1.1758   14(7) 16QAM756 1.4766   15(9) 16QAM 1232 2.4063

An example of the second CQI table having the above characteristics 2),3), 4), 5), 6), 7) and 9) is shown in Table 7:

TABLE 7 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 QPSK 1 0.00005 2 QPSK 2 0.0001 3 QPSK 4 0.0002 4 QPSK 80.0039 5 QPSK 12 0.0059 6 QPSK 24 0.0117 7 QPSK 48 0.0234 8 QPSK 880.0430 9 QPSK 168 0.0820   10(1) QPSK 312 0.1523   11(2) QPSK 480 0.2344  12(3) QPSK 772 0.3770   13(4) QPSK 1232 0.6016   14(6) QPSK 24081.1758   15(9) 16QAM 2464 2.4063

Alternatively, the second CQI table can be a CQI table having otherforms.

For example, the second CQI table has r values and each CQI in thesecond CQI table is represented by x bits. The first CQI table includesin total L1 combinations of modulation scheme and code rate, the L1combinations of modulation scheme and code rate are used as the first orlast L1 combinations of modulation scheme and code rate in the secondCQI table. The remaining L2 combinations of modulation scheme and coderate in the second CQI table include L21 type-1 combinations of BPSK andcode rate r and L22 type-2 combinations of QPSK and code rate r, whereL1 and L2 are each an integer larger than 0, L21 and L22 are each aninteger larger than or equal to 0, L2=L21+L22, r is a real numbersmaller than 156/1024, L1+L2≤15, and x≤4.

For example, the first CQI table includes in total L1 combinations ofmodulation scheme and code rate, the second CQI table includes in totalL2 combinations of modulation scheme and code rate. The L2 combinationsare a subset of the L1 combinations, where L1≤15, L2≤7, L1 and L2 areeach an integer larger than 0. A modulation scheme of the highest orderin the first CQI table is 64 Quadrature Amplitude Modulation (QAM) and amodulation scheme of the highest order in the second CQI table is 16QAM.

Here, the first CQI table can include at least one of: a CQI tablehaving modulation order of up to 64, a CQI table having modulation orderof up to 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release8.

With the method according to this embodiment, transmissions andfeedbacks associated with MTC terminals or 5G terminal at two coveragelevels can be well supported. In particular, a method for processing theout-of-range state has been proposed, such that three coverage levelscan be supported with the configuration of two coverage levels. The MTCterminals or 5G terminals can be well supported, with compatibility withrelevant systems and without increasing signaling overhead. The accuracyof link adaptation can be improved particularly in the deep coveragescenario. The reliability and the efficiency of the system can beimproved to the greatest extent.

Embodiment 2

In this embodiment, a method for processing CQI information is provided.The method can be applied in a base station and includes the followingsteps.

The base station transmits a higher layer configuration signalingmessage to a terminal.

The base station receives CSI from the terminal. The CSI includes CQIinformation that is obtained based on a CQI table determined from thehigher layer configuration signal.

Optionally, the base station transmits the higher layer configurationsignaling message to the terminal and the higher layer configurationsignaling message can include at least one of: a coverage levelsignaling, a number, M, of subframes occupied by CSI reference resource,a number of repetitions for a downlink control channel, a number ofrepetitions for a downlink data shared channel, a number of repetitionsfor a PRACH, a CQI table selection signaling, a category of terminal, ascenario indication signaling, a frequency band indication signaling, orchannel coding type indication information. Here, the coverage levelsignaling indicates different coverage levels of the terminal. Thescenario indication signaling indicates an eMBB scenario, a URLLCscenario or an mMTC scenario, all of which are typical scenarios of NewRAT in the 5G mobile communications. The frequency band indicationsignaling indicates different ranges of carrier frequencies. The channelcoding type indication information indicates different channel codingtypes including any two of: LDPC code, turbo code, convolutional code orpolar code.

Optionally, the base station transmits the higher layer configurationsignaling message to the terminal and the higher layer configurationsignaling message can include the coverage level signaling. The coveragelevel signaling selects normal coverage or enhanced coverage.Alternatively, the coverage level signaling selects normal coverage,moderate coverage or deep coverage. Alternatively, the coverage levelsignaling selects normal coverage, low enhanced coverage, moderateenhanced coverage or high enhanced coverage.

Three Coverage Levels

Optionally, the base station receives the CSI from the terminal. The CSIincludes the CQI information. The coverage level signaling selectsnormal coverage, moderate coverage or deep coverage. When the abovecoverage level signaling indicates the support of normal coverage, theCQI information can be obtained from the first CQI table. When the abovecoverage level signaling indicates the support of moderate coverage, theCQI information can be obtained from the fourth CQI table. When theabove coverage level signaling indicates the support of deep coverage,the CQI information can be obtained from the fifth CQI table. Here, thefirst CQI table can be an existing CQI table having modulation order ofup to 64.

Optionally, the first CQI table can be a 4-bit CQI table in LTE Release8. The fourth CQI table and the fifth CQI table can be one of thefollowing schemes.

Scheme A1:

The fourth CQI table has 2^(x) values, i.e., each CQI is represented byx bits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table. The first L2 combinations of modulation schemeand code rate in the fourth CQI table are combinations of QPSK and coderate r, where L1 and L2 are each a positive integer larger than 1, r isa real number smaller than 78/1024, L1+L2≤15, and x≤4.

The fifth CQI table has 2^(y) values, i.e., each CQI is represented by ybits. L3 combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table. The first L4 combinations of modulation schemeand code rate in the fifth CQI table are combinations of QPSK and coderate r, where L3 and L4 are each a positive integer larger than 1, r isa real number smaller than 78/1024, L3+L4≤15, and y≤4.

The fourth CQI table is shown in Table 8:

TABLE 8 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0out-of-range 1 QPSK 1 0.0020 2 QPSK 2 0.0039 3 QPSK 3 0.0059 4 QPSK 60.0117 5 QPSK 12 0.0234 6 QPSK 22 0.0430 7 QPSK 42 0.0820   8(1) QPSK 780.1523   9(2) QPSK 120 0.2344   10(3) QPSK 193 0.377   11(4) QPSK 3080.6016   12(5) QPSK 449 0.877   13(6) QPSK 602 1.1758   14(7) 16QAM 3781.4766   15(9) 16QAM 616 2.4063

The fifth CQI table is shown in Table 9:

TABLE 9 CQI Modulation Index Scheme Code Rate *1024 Efficiency 0 out ofrange 1 QPSK 1 0.0005 2 QPSK 2 0.0010 3 QPSK 3 0.0015 4 QPSK 4 0.0020 5QPSK 8 0.0039 6 QPSK 12 0.0059 7 QPSK 24 0.0117

Here, x=4 and y=3.

Scheme A2:

The fourth CQI table has 2^(x) values, i.e., each CQI is represented byx bits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table. The first L2 combinations of modulation schemeand code rate in the fourth CQI table are combinations of BPSK and coderate r, where L1 and L2 are each a positive integer larger than 1, r isa real number smaller than 156/1024, L1+L2≤15, and x≤4.

The fifth CQI table has 2^(y) values, i.e., each CQI is represented by ybits. L3 combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table. The first L4 combinations of modulation schemeand code rate in the fifth CQI table are combinations of BPSK and coderate r, where L3 and L4 are each a positive integer larger than 1, r isa real number smaller than 156/1024, L3+L4≤15, and y≤4.

Scheme A3:

The fourth CQI table has 2^(x) values, i.e., each CQI is represented byx bits. L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table. The first L2 combinations of modulation schemeand code rate in the fourth CQI table include L21 combinations of BPSKand code rate r and L22 combinations of QPSK and code rate r, where L1and L2 are each a positive integer larger than 1, L2=L21+L22, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4.

The fifth CQI table has 2^(y) values, i.e., each CQI is represented by ybits. L3 combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table. The first L4 combinations of modulation schemeand code rate in the fifth CQI table include L41 combinations of BPSKand code rate r and L42 combinations of QPSK and code rate r, where L3and L4 are each a positive integer larger than 1, L2=L41+L42, r is areal number smaller than 156/1024, L3+L4≤15, and y≤4.

Optionally, the fourth CQI table and the fifth CQI table can have one ofthe following characteristics:

1) a minimum value of code rate in the fifth CQI table is smaller than aminimum value of code rate in the fourth CQI table;

2) the minimum value of code rate in the fifth CQI table is smaller thanor equal to 1/1024;

3) the minimum value of code rate in the fourth CQI table is smallerthan 1/1024;

4) the fourth CQI table includes a combination of QPSK and r=449/1024;

5) the fourth CQI table includes all combinations of QPSK and code ratein the first CQI table;

6) the fifth CQI table includes none of the combinations of QPSK andcode rate in the first CQI table;

7) the fifth CQI table includes all combinations of QPSK and code ratethat are included in the fourth CQI table but not in the first CQItable;

8) the fourth CQI table includes at least one combination of 16QAM andcode rate in the first CQI table;

9) among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but three combination,defined as a ratio of spectrum efficiency of the last combination tothat of the last but three combination, is higher than or equal to thespectrum efficiency ratios for other pairs of combinations;

10) among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the fourth combination and the first combination, defined asa ratio of spectrum efficiency of the fourth combination to that of thefirst combination, is higher than or equal to the spectrum efficiencyratios for other pairs of combinations;

11) among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but three combination andthe spectrum efficiency ratio for the pair of the fourth combination andthe first combination, are higher than or equal to the spectrumefficiency ratios for other pairs of combinations;

12) among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination andthe spectrum efficiency ratio for the pair of the last but threecombination and the last but one combination, defined as a ratio ofspectrum efficiency of the last but four combination to that of the lastbut three combination, are higher than or equal to the spectrumefficiency ratios for other pairs of combinations;

13) among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the fourth combination and the first combination and thespectrum efficiency ratio for the pair of the fifth combination and thefourth combination, defined as a ratio of spectrum efficiency of thefifth combination to that of the fourth combination, are higher than orequal to the spectrum efficiency ratios for other pairs of combinations;

14) when a current CQI or the latest CQI is based on the first CQI tableand that CQI has a value indicating an out-of-range state, the currentCQI will trigger feedback of another CQI based on the fourth CQI table;or

15) when the current CQI or the latest CQI is based on the fourth CQItable and that CQI has a value indicating an out-of-range state, thecurrent CQI will trigger feedback of another CQI based on the fifth CQItable.

Here, the efficiency ratio for a pair of neighboring combinations ofmodulation scheme and code rate refers to a ratio of the spectrumefficiency of the second combination in the pair to that of the firstcombination in the pair. The spectrum efficiency is a product of themodulation order and the code rate. For BPSK, QPSK, 16QAM and 64QAM,their modulation orders are 1, 2, 4 and 6, respectively.

With the method according to this embodiment, transmissions andfeedbacks associated with MTC terminals or 5G terminals at differentcoverage levels can be well supported. The MTC terminals or 5G terminalscan be well supported, with compatibility with relevant systems andwithout increasing signaling overhead. The accuracy of link adaptationcan be improved particularly in the deep coverage scenario. Thereliability and the efficiency of the system can be improved to thegreatest extent.

Embodiment 3

This embodiment relates to a solution for coding CQI informationaccording to an embodiment of the present disclosure. The solution canbe applied in a base station.

Based on the above embodiment, the solution of the embodiment of thepresent disclosure can be applied in the base station. The method forthe CQI information can include the following steps.

At step S502, the base station (e.g., eNodeB) transmits a higher layerconfiguration signaling message to a terminal (UE).

At step S504, the base station receives CSI from the terminal. The CSIincludes CQI information that is obtained based on a CQI tablecorresponding to the higher layer configuration signaling message.

Then, the base station (e.g., eNodeB) transmits downlink data to theterminal (UE) based on the previously described downlink controlsignaling.

Further, in an embodiment of the present disclosure, a method for codingCQI information is provided. The method can be applied in a terminal.That is, the method according to the embodiment of the presentdisclosure can be described from the perspective of the terminal.

Based on the above, the method applied in the terminal for coding CQIinformation includes the following steps.

At step S602, the terminal device receives a higher layer configurationsignaling message transmitted from a base station.

At step S604, the terminal transmits CSI to the base station. The CQIinformation is obtained based on a CQI table corresponding to the higherlayer configuration signal.

In an embodiment of the present disclosure, a base station correspondingto the above method embodiment is also provided. The base stationincludes a configuration signaling transmitting unit (corresponding tothe above first transmitting module 32) configured to transmit a higherlayer configuration signaling message to a terminal.

Optionally, the higher layer configuration signaling message can beimplemented as described above.

Optionally, the base station can further include a CSI receiving unit(corresponding to the above first receiving module 34) configured toreceive CSI from the terminal. The CSI includes CQI information that isobtained based on a CQI table corresponding to the higher layerconfiguration signal.

Optionally, each CQI table can be implemented as described above.

In summary, with the base station according to this embodiment,transmissions and feedbacks associated with MTC terminals or 5Gterminals at different coverage levels can be well supported. The MTCterminals or 5G terminals can be well supported, with compatibility withrelevant systems and without increasing signaling overhead. The accuracyof link adaptation can be improved particularly in the deep coveragescenario. The reliability and the efficiency of the system can beimproved to the greatest extent.

In an embodiment of the present disclosure, a terminal corresponding tothe above method embodiment is also provided. The terminal includes aconfiguration information receiving unit (i.e., the above secondreceiving module 42) configured to receive a higher layer configurationsignaling message transmitted from a base station.

The higher layer configuration signaling message can be implemented asdescribed above.

The terminal further includes a CSI reporting unit (i.e., the abovesecond transmitting module 46) configured to transmit CSI to the basestation. The CSI includes CQI information that is obtained based on aCQI table corresponding to the higher layer configuration signal.

Each CQI table can be implemented as described above.

The terminal further includes a control information receiving anddetecting unit configured to receive and detect a downlink controlsignaling transmitted from the base station.

The first and second modulation tables and the TBS tables can beimplemented as described above.

With the method for CQI information, base station and terminal in theabove embodiments, the consistency in feedbacks and transmissions can beguaranteed by higher layer signaling. On one hand, high ordermodulations can be supported, with compatibility with relevant wirelesstransmission networks, thereby increasing the peak data rate andspectrum efficiency. On the other hand, it is possible to switch betweenusing high-order QAM and not using high-order QAM. The high-order (e.g.,64) QAM transmission can be supported in an appropriate normal coverage,and only transmissions of low-order modulation can be supported whenhigh-order QAM is not feasible, e.g., for a macro base station.

It should be noted that each of the above-described modules can beimplemented by means of software or hardware, and the latter can beimplemented in, but not limited to, the following manner: theabove-mentioned modules can be located at the same processor, or can bedistributed over a plurality of processors.

According to an embodiment of the present disclosure, a storage mediumis also provided.

Optionally, in this embodiment, the storage medium can be configured tostore program codes for the following steps.

At S11, a higher layer configuration signaling message is transmitted toa terminal.

At S12, CQI information is received from the terminal. The CQIinformation is determined based on a CQI table obtained based on thehigher layer configuration signaling message.

Optionally, the storage medium can further be configured to storeprogram codes for the following steps.

At S21, a higher layer configuration signaling message transmitted froma base station is received.

At S22, CQI information is determined based on a CQI table obtainedbased on the higher layer configuration signaling message.

At S23, the determined CQI information is transmitted to the basestation.

Alternatively, in the present embodiment, the above-described storagemedium may include, but not limited to, a USB disk, a Read-Only Memory(ROM), a Random Access Memory (RAM), a mobile hard disk, a magneticdisk, an optical disc, or other mediums capable of storing programcodes.

Optionally, in this embodiment, the processor can perform the abovesteps S11-S12 in accordance with program codes stored in the storagemedium.

Optionally, in this embodiment, the processor can perform the abovesteps S21-S23 in accordance with program codes stored in the storagemedium.

Optionally, regarding the specific examples in this embodiment,reference can be made to the above embodiments and the examplesdescribed in the optional embodiments, and the details thereof will beomitted here.

It can be appreciated by those skilled in the art that theabove-described modules or steps of the present disclosure can beimplemented by a general purpose computing device, and can becentralized at one single computing device or distributed over a networkof multiple computing devices. Optionally, they can be implemented bymeans of computer executable program codes, which can be stored in astorage device and executed by one or more computing devices. In somecases, the steps shown or described herein may be performed in an orderdifferent from the one described above. Alternatively, they can beimplemented separately in individual integrated circuit modules, or oneor more of the modules or steps can be implemented in one singleintegrated circuit module. Thus, the present disclosure is not limitedto any particular hardware, software, and combination thereof.

The foregoing is merely illustrative of the preferred embodiments of thepresent disclosure and is not intended to limit the present disclosure.Various changes and modifications may be made by those skilled in theart. Any modifications, equivalent alternatives or improvements that aremade without departing from the spirits and principles of the presentdisclosure are to be encompassed by the scope of the present disclosure.

INDUSTRIAL APPLICABILITY

With the above solutions, higher data transmission reliability and lowerdata transmission rate required for MTC terminals with coverageenhancement and 5G terminals can be achieved.

What is claimed is:
 1. A method for receiving Channel Quality Indication(CQI) information, comprising: transmitting a higher layer configurationsignaling message to a terminal; and receiving CQI information from theterminal, the CQI information being determined based on a CQI tableobtained based on the higher layer configuration signaling message. 2.The method of claim 1, wherein the higher layer configuration signalingmessage comprises at least one of the following information: a coveragelevel signaling, a number of subframes occupied by Channel StateInformation (CSI) reference resource, a number of repetitions for adownlink control channel, a number of repetitions for a downlink datashared channel, a number of repetitions for a Physical Random AccessChannel (PRACH), a CQI table selection signaling, a category ofterminal, a scenario indication signaling, a frequency band indicationsignaling, or channel coding type indication information, wherein thecoverage level signaling indicates a coverage level comprising one of:normal coverage or enhanced coverage; normal coverage, moderate coverageor deep coverage; or normal coverage, low enhanced coverage, moderateenhanced coverage or high enhanced coverage; the scenario indicationsignaling indicates an enhanced Mobile Broad-Band (eMBB) scenario, anUltra Reliable Low Latency Communications (URLLC) scenario or a massiveMachine Type Communications (mMTC) scenario; the frequency bandindication signaling indicates different ranges of carrier frequencies;and the channel coding type indication information indicates differentchannel coding types comprising any two of: Low Density Parity Check(LDPC) code, turbo code, convolutional code or polar code.
 3. The methodof claim 2, wherein the CQI table comprises a first CQI table and asecond CQI table, wherein the second CQI table has at least one of thefollowing characteristics: the second CQI table has 2^(x) values, eachCQI in the second CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the second CQI table,and the first L2 combinations of modulation scheme and code rate in thesecond CQI table are combinations of Quadrature Phase Shift Keying(QPSK) and code rate r, where L1 and L2 are each an integer larger thanor equal to 0, r is a real number smaller than 78/1024, L1+L2≤15, andx≤4; the second CQI table has 2^(x) values, each CQI in the second CQItable is represented by x bits, L1 combinations of modulation scheme andcode rate other than L2 combinations of modulation scheme and code ratein the first CQI table are used as the last L1 combinations ofmodulation scheme and code rate in the second CQI table, and the firstL2 combinations of modulation scheme and code rate in the second CQItable are combinations of Binary Phase Shift Keying (BPSK) and code rater, where L1 and L2 are each an integer larger than or equal to 0, r is areal number smaller than 156/1024, L1+L2≤15, and x≤4; the second CQItable has 2^(x) values, each CQI in the second CQI table is representedby x bits, L1 combinations of modulation scheme and code rate other thanL2 combinations of modulation scheme and code rate in the first CQItable are used as the last L1 combinations of modulation scheme and coderate in the second CQI table, and the first L2 combinations ofmodulation scheme and code rate in the second CQI table comprise L21combinations of BPSK and code rate r and L22 combinations of QPSK andcode rate r, where L1 and L2 are each an integer larger than or equal to0, L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15, andx≤4; the second CQI table has 2^(x) values, each CQI in the second CQItable is represented by x bits, the first CQI table comprises in totalL1 combinations of modulation scheme and code rate, the L1 combinationsof modulation scheme and code rate are used as the first or last L1combinations of modulation scheme and code rate in the second CQI table,and the remaining L2 combinations of modulation scheme and code rate inthe second CQI table comprise L21 type-1 combinations of BPSK and coderate r and L22 type-2 combinations of QPSK and code rate r, where L1 andL2 are each an integer larger than 0, L21 and L22 are each an integerlarger than or equal to 0, L2=L21+L22, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the first CQI table comprises in total L1combinations of modulation scheme and code rate, the second CQI tablecomprises in total L2 combinations of modulation scheme and code rate,the L2 combinations are a subset of the L1 combinations, where 8≤L1≤15,L2≤7, L1 and L2 are each an integer larger than 0, wherein a modulationscheme of the highest order in the first CQI table is 64 QuadratureAmplitude Modulation (QAM) and a modulation scheme of the highest orderin the second CQI table is 16QAM; or the first CQI table and the secondCQI table comprise in total L1=7 combinations of modulation scheme andcode rate, the modulation schemes in the first CQI table comprise QPSKand 16QAM, and the modulation schemes in the second CQI table compriseQPSK and/or BPSK, the second CQI table comprises at least two of thefirst, third, fifth and seventh combinations in the first CQI table, orat least two of the second, fourth, sixth combinations in the first CQItable, and wherein the first CQI table comprises at least one of: a CQItable having modulation order of up to 64, a CQI table having modulationorder of up to 16, or a 4-bit CQI table in Long Term Evolution (LTE)Release
 8. 4. The method of claim 3, wherein the second CQI table has atleast one of the following characteristics: a minimum value of r issmaller than 1/1024; the minimum value of r equals to 1/2048, 1/4096 or1/3072; a combination of QPSK and r=449/1024 is excluded; the second CQItable comprises all combinations of QPSK and code rate, other than acombination of QPSK and r=449/1024, in the first CQI table; the secondCQI table comprises one combination of 16QAM and code rate in the firstCQI table; the second CQI table comprises one of a combination of 16QAMand a code rate of 490/1024 and a combination of 16QAM and a code rateof 616/1024; among spectrum efficiency ratios for all pairs ofneighboring combinations in the second CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe second CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when thelatest CQI is based on the first CQI table and that CQI has a valueindicating an out-of-range state, a current CQI will trigger feedback ofanother CQI based on the second CQI table; the CQI table furthercomprises a third CQI table consisting of combinations of modulationscheme and code rate that have lower spectrum efficiency, wherein whenthe latest CQI is based on the second CQI table and that CQI has a valueindicating an out-of-range state, the current CQI will trigger feedbackof another CQI based on the third CQI table; the second CQI tablecomprises two out-of-range states: a state lower than a combination ofmodulation scheme and code rate corresponding to the lowest spectrumefficiency, and a state higher than a combination of modulation schemeand code rate corresponding to the highest spectrum efficiency; any pairof neighboring ones from N1 consecutive combinations of modulationscheme and code rate in the second CQI table has a higher spectrumefficiency ratio than all pairs of neighboring ones from N2 consecutivecombinations of modulation scheme and code rate in the first CQI table,where N1 and N2 are each an integer larger than or equal to 2; or eachpair of neighboring ones from N3 consecutive combinations of modulationscheme and code rate in the middle of the second CQI table has a lowerspectrum efficiency ratio than all pairs of neighboring ones from thefirst N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to
 2. 5. The method of claim 2, wherein theCQI table comprises a first CQI table, a fourth CQI table and a fifthCQI table, wherein the fourth CQI table and the fifth CQI table compriseone of the following combinations: the fourth CQI table has 2^(x)values, each CQI in the fourth CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table, and the first L2 combinations of modulationscheme and code rate in the fourth CQI table are combinations of QPSKand code rate r, where L1 and L2 are each a positive integer larger than1, r is a real number smaller than 78/1024, L1+L2≤15, and x≤4; the fifthCQI table has 2^(y) values, each CQI in the fifth CQI table isrepresented by y bits, L3 combinations of modulation scheme and coderate other than L4 combinations of modulation scheme and code rate inthe fourth CQI table are used as the last L3 combinations of modulationscheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableare combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L3+L4≤15, and y≤4; the fourth CQI table has 2^(x) values, each CQI inthe fourth CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the fourth CQI table,and the first L2 combinations of modulation scheme and code rate in thefourth CQI table are combinations of BPSK and code rate r, where L1 andL2 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values,each CQI in the fifth CQI table is represented by y bits, L3combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table, and the first L4 combinations of modulationscheme and code rate in the fifth CQI table are combinations of BPSK andcode rate r, where L3 and L4 are each a positive integer larger than 1,r is a real number smaller than 156/1024, L3+L4≤15, and y≤4; the fourthCQI table has 2^(x) values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tablecomprise L21 combinations of BPSK and code rate r and L22 combinationsof QPSK and code rate r, where L1 and L2 are each a positive integerlarger than 1, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable comprise L41 combinations of BPSK and code rate r and L42combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, L2=L41+L42, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4; or the first CQI table comprises L1combinations of modulation scheme and code rate, the fourth CQI tablecomprises L2 combinations of modulation scheme and code rate, the fifthCQI table comprises L2 combinations of modulation scheme and code rate,where L1 and L2 are each an integer larger than or equal to 7 andL2<L1/2, all the combinations of modulation scheme and code rate in thefourth CQI table and all the combinations of modulation scheme and coderate in the fifth CQI table are each a subset of all the combinations ofmodulation scheme and code rate in the first CQI table, and wherein thefirst CQI table comprises at least one of: a CQI table having modulationorder of up to 64, a CQI table having modulation order of up to 16, or a4-bit CQI table in Long Term Evolution (LTE) Release
 8. 6. The method ofclaim 5, wherein the fourth CQI table and the fifth CQI table have atleast one of the following characteristics: a minimum value of code ratein the fifth CQI table is smaller than a minimum value of code rate inthe fourth CQI table; the minimum value of code rate in the fifth CQItable is smaller than or equal to 1/1024; the minimum value of code ratein the fourth CQI table is smaller than or equal to 1/1024; the fourthCQI table comprises a combination of QPSK and r=449/1024; the fourth CQItable comprises all combinations of QPSK and code rate in the first CQItable; the fifth CQI table comprises none of the combinations of QPSKand code rate in the first CQI table; the fifth CQI table comprises allcombinations of QPSK and code rate that are included in the fourth CQItable but not in the first CQI table; the fourth CQI table comprises atleast one combination of 16QAM and code rate in the first CQI table;among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination, isthe highest; among spectrum efficiency ratios for all pairs ofneighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the second combination and the firstcombination, is the highest; among spectrum efficiency ratios for allpairs of neighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination and the spectrum efficiency ratio for the pair of thesecond combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe fourth CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when acurrent CQI or the latest CQI is based on the first CQI table and thatCQI has a value indicating an out-of-range state, the current CQI willtrigger feedback of another CQI based on the fourth CQI table; or whenthe current CQI or the latest CQI is based on the fourth CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fifth CQI table.
 7. Amethod for transmitting Channel Quality Indication (CQI) information,comprising: receiving a higher layer configuration signaling messagetransmitted from a base station; determining CQI information based on aCQI table obtained based on the higher layer configuration signalingmessage; and transmitting the determined CQI information to the basestation.
 8. The method of claim 7, wherein the higher layerconfiguration signaling message comprises at least one of the followinginformation: a coverage level signaling, a number of subframes occupiedby Channel State Information (CSI) reference resource, a number ofrepetitions for a downlink control channel, a number of repetitions fora downlink data shared channel, a number of repetitions for a PhysicalRandom Access Channel (PRACH), a CQI table selection signaling, acategory of terminal, a scenario indication signaling, a frequency bandindication signaling, or channel coding type indication information,wherein the coverage level signaling indicates a coverage levelcomprising one of: normal coverage or enhanced coverage; normalcoverage, moderate coverage or deep coverage; or normal coverage, lowenhanced coverage, moderate enhanced coverage or high enhanced coverage;the scenario indication signaling indicates an enhanced MobileBroad-Band (eMBB) scenario, an Ultra Reliable Low Latency Communications(URLLC) scenario or a massive Machine Type Communications (mMTC)scenario; the frequency band indication signaling indicates differentranges of carrier frequencies; and the channel coding type indicationinformation indicates different channel coding types comprising any twoof: Low Density Parity Check (LDPC) code, turbo code, convolutional codeor polar code.
 9. The method of claim 8, wherein the CQI table comprisesa first CQI table and a second CQI table, wherein the second CQI tablehas at least one of the following characteristics: the second CQI tablehas 2^(x) values, each CQI in the second CQI table is represented by xbits, L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations ofQuadrature Phase Shift Keying (QPSK) and code rate r, where L1 and L2are each an integer larger than or equal to 0, r is a real numbersmaller than 78/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations of BinaryPhase Shift Keying (BPSK) and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x) values, eachCQI in the second CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the second CQI table,and the first L2 combinations of modulation scheme and code rate in thesecond CQI table comprise L21 combinations of BPSK and code rate r andL22 combinations of QPSK and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, L2=L21+L22, r is a real numbersmaller than 156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, thefirst CQI table comprises in total L1 combinations of modulation schemeand code rate, the L1 combinations of modulation scheme and code rateare used as the first or last L1 combinations of modulation scheme andcode rate in the second CQI table, and the remaining L2 combinations ofmodulation scheme and code rate in the second CQI table comprise L21type-1 combinations of BPSK and code rate r and L22 type-2 combinationsof QPSK and code rate r, where L1 and L2 are each an integer larger than0, L21 and L22 are each an integer larger than or equal to 0,L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15, and x≤4;the first CQI table comprises in total L1 combinations of modulationscheme and code rate, the second CQI table comprises in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or the first CQI table and the second CQI table comprise in totalL1=7 combinations of modulation scheme and code rate, the modulationschemes in the first CQI table comprise QPSK and 16QAM, and themodulation schemes in the second CQI table comprise QPSK and/or BPSK,the second CQI table comprises at least two of the first, third, fifthand seventh combinations in the first CQI table, or at least two of thesecond, fourth, sixth combinations in the first CQI table, and whereinthe first CQI table comprises at least one of: a CQI table havingmodulation order of up to 64, a CQI table having modulation order of upto 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release
 8. 10.The method of claim 9, wherein the second CQI table has at least one ofthe following characteristics: a minimum value of r is smaller than1/1024; the minimum value of r equals to 1/2048, 1/4096 or 1/3072; acombination of QPSK and r=449/1024 is excluded; the second CQI tablecomprises all combinations of QPSK and code rate, other than acombination of QPSK and r=449/1024, in the first CQI table; the secondCQI table comprises one combination of 16QAM and code rate in the firstCQI table; the second CQI table comprises one of a combination of 16QAMand a code rate of 490/1024 and a combination of 16QAM and a code rateof 616/1024; among spectrum efficiency ratios for all pairs ofneighboring combinations in the second CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe second CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when thelatest CQI is based on the first CQI table and that CQI has a valueindicating an out-of-range state, a current CQI will trigger feedback ofanother CQI based on the second CQI table; the CQI table furthercomprises a third CQI table consisting of combinations of modulationscheme and code rate that have lower spectrum efficiency, wherein whenthe latest CQI is based on the second CQI table and that CQI has a valueindicating an out-of-range state, the current CQI will trigger feedbackof another CQI based on the third CQI table; the second CQI tablecomprises two out-of-range states: a state lower than a combination ofmodulation scheme and code rate associated with the lowest spectrumefficiency, and a state higher than a combination of modulation schemeand code rate associated with the highest spectrum efficiency; any pairof neighboring ones from N1 consecutive combinations of modulationscheme and code rate in the second CQI table has a higher spectrumefficiency ratio than all pairs of neighboring ones from N2 consecutivecombinations of modulation scheme and code rate in the first CQI table,where N1 and N2 are each an integer larger than or equal to 2; or eachpair of neighboring ones from N3 consecutive combinations of modulationscheme and code rate in the middle of the second CQI table has a lowerspectrum efficiency ratio than all pairs of neighboring ones from thefirst N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to
 2. 11. The method of claim 8, whereinthe CQI table comprises a first CQI table, a fourth CQI table and afifth CQI table, wherein the fourth CQI table and the fifth CQI tablecomprise one of the following combinations: the fourth CQI table has2^(x) values, each CQI in the fourth CQI table is represented by x bits,L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table, and the first L2 combinations of modulationscheme and code rate in the fourth CQI table are combinations of QPSKand code rate r, where L1 and L2 are each a positive integer larger than1, r is a real number smaller than 78/1024, L1+L2≤15, and x≤4; the fifthCQI table has 2^(y) values, each CQI in the fifth CQI table isrepresented by y bits, L3 combinations of modulation scheme and coderate other than L4 combinations of modulation scheme and code rate inthe fourth CQI table are used as the last L3 combinations of modulationscheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableare combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L3+L4≤15, and y≤4; the fourth CQI table has 2^(x) values, each CQI inthe fourth CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the fourth CQI table,and the first L2 combinations of modulation scheme and code rate in thefourth CQI table are combinations of BPSK and code rate r, where L1 andL2 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values,each CQI in the fifth CQI table is represented by y bits, L3combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table, and the first L4 combinations of modulationscheme and code rate in the fifth CQI table are combinations of BPSK andcode rate r, where L3 and L4 are each a positive integer larger than 1,r is a real number smaller than 156/1024, L3+L4≤15, and y≤4; the fourthCQI table has 2^(x) values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tablecomprise L21 combinations of BPSK and code rate r and L22 combinationsof QPSK and code rate r, where L1 and L2 are each a positive integerlarger than 1, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable comprise L41 combinations of BPSK and code rate r and L42combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, L2=L41+L42, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4; or the first CQI table comprises L1combinations of modulation scheme and code rate, the fourth CQI tablecomprises L2 combinations of modulation scheme and code rate, the fifthCQI table comprises L2 combinations of modulation scheme and code rate,where L1 and L2 are each an integer larger than or equal to 7 andL2<L1/2, all the combinations of modulation scheme and code rate in thefourth CQI table and all the combinations of modulation scheme and coderate in the fifth CQI table are each a subset of all the combinations ofmodulation scheme and code rate in the first CQI table, and wherein thefirst CQI table comprises at least one of: a CQI table having modulationorder of up to 64, a CQI table having modulation order of up to 16, or a4-bit CQI table in Long Term Evolution (LTE) Release
 8. 12. The methodof claim 11, wherein the fourth CQI table and the fifth CQI table haveat least one of the following characteristics: a minimum value of coderate in the fifth CQI table is smaller than a minimum value of code ratein the fourth CQI table; the minimum value of code rate in the fifth CQItable is smaller than or equal to 1/1024; the minimum value of code ratein the fourth CQI table is smaller than or equal to 1/1024; the fourthCQI table comprises a combination of QPSK and r=449/1024; the fourth CQItable comprises all combinations of QPSK and code rate in the first CQItable; the fifth CQI table comprises none of the combinations of QPSKand code rate in the first CQI table; the fifth CQI table comprises allcombinations of QPSK and code rate that are included in the fourth CQItable but not in the first CQI table; the fourth CQI table comprises atleast one combination of 16QAM and code rate in the first CQI table;among spectrum efficiency ratios for all pairs of neighboringcombinations in the fourth CQI table, the spectrum efficiency ratio forthe pair of the last combination and the last but one combination, isthe highest; among spectrum efficiency ratios for all pairs ofneighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the second combination and the firstcombination, is the highest; among spectrum efficiency ratios for allpairs of neighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination and the spectrum efficiency ratio for the pair of thesecond combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe fourth CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when acurrent CQI or the latest CQI is based on the first CQI table and thatCQI has a value indicating an out-of-range state, the current CQI willtrigger feedback of another CQI based on the fourth CQI table; or whenthe current CQI or the latest CQI is based on the fourth CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fifth CQI table. 13.An apparatus for receiving Channel Quality Indication (CQI) information,comprising: a first transmitting module configured to transmit a higherlayer configuration signaling message to a terminal; and a firstreceiving module configured to receive CQI information from theterminal, the CQI information being determined based on a CQI tableobtained based on the higher layer configuration signaling message. 14.The apparatus of claim 13, wherein the higher layer configurationsignaling message comprises at least one of the following information: acoverage level signaling, a number of subframes occupied by ChannelState Information (CSI) reference resource, a number of repetitions fora downlink control channel, a number of repetitions for a downlink datashared channel, a number of repetitions for a Physical Random AccessChannel (PRACH), a CQI table selection signaling, a category ofterminal, a scenario indication signaling, a frequency band indicationsignaling, or channel coding type indication information, wherein thecoverage level signaling indicates a coverage level comprising one of:normal coverage or enhanced coverage; normal coverage, moderate coverageor deep coverage; or normal coverage, low enhanced coverage, moderateenhanced coverage or high enhanced coverage; the scenario indicationsignaling indicates an enhanced Mobile Broad-Band (eMBB) scenario, anUltra Reliable Low Latency Communications (URLLC) scenario or a massiveMachine Type Communications (mMTC) scenario; the frequency bandindication signaling indicates different ranges of carrier frequencies;and the channel coding type indication information indicates differentchannel coding types comprising any two of: Low Density Parity Check(LDPC) code, turbo code, convolutional code or polar code.
 15. Theapparatus of claim 14, wherein the CQI table comprises a first CQI tableand a second CQI table, wherein the second CQI table has at least one ofthe following characteristics: the second CQI table has 2^(x) values,each CQI in the second CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations ofQuadrature Phase Shift Keying (QPSK) and code rate r, where L1 and L2are each an integer larger than or equal to 0, r is a real numbersmaller than 78/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations of BinaryPhase Shift Keying (BPSK) and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x) values, eachCQI in the second CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the second CQI table,and the first L2 combinations of modulation scheme and code rate in thesecond CQI table comprise L21 combinations of BPSK and code rate r andL22 combinations of QPSK and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, L2=L21+L22, r is a real numbersmaller than 156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, thefirst CQI table comprises in total L1 combinations of modulation schemeand code rate, the L1 combinations of modulation scheme and code rateare used as the first or last L1 combinations of modulation scheme andcode rate in the second CQI table, and the remaining L2 combinations ofmodulation scheme and code rate in the second CQI table comprise L21type-1 combinations of BPSK and code rate r and L22 type-2 combinationsof QPSK and code rate r, where L1 and L2 are each an integer larger than0, L21 and L22 are each an integer larger than or equal to 0,L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15, and x≤4;the first CQI table comprises in total L1 combinations of modulationscheme and code rate, the second CQI table comprises in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or the first CQI table and the second CQI table comprise in totalL1=7 combinations of modulation scheme and code rate, the modulationschemes in the first CQI table comprise QPSK and 16QAM, and themodulation schemes in the second CQI table comprise QPSK and/or BPSK,the second CQI table comprises at least two of the first, third, fifthand seventh combinations in the first CQI table, or at least two of thesecond, fourth, sixth combinations in the first CQI table, and whereinthe first CQI table comprises at least one of: a CQI table havingmodulation order of up to 64, a CQI table having modulation order of upto 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release
 8. 16.The apparatus of claim 15, wherein the second CQI table has at least oneof the following characteristics: a minimum value of r is smaller than1/1024; the minimum value of r equals to 1/2048, 1/4096 or 1/3072; acombination of QPSK and r=449/1024 is excluded; the second CQI tablecomprises all combinations of QPSK and code rate, other than acombination of QPSK and r=449/1024, in the first CQI table; the secondCQI table comprises one combination of 16QAM and code rate in the firstCQI table; the second CQI table comprises one of a combination of 16QAMand a code rate of 490/1024 and a combination of 16QAM and a code rateof 616/1024; among spectrum efficiency ratios for all pairs ofneighboring combinations in the second CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe second CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when thelatest CQI is based on the first CQI table and that CQI has a valueindicating an out-of-range state, a current CQI will trigger feedback ofanother CQI based on the second CQI table; the CQI table furthercomprises a third CQI table consisting of combinations of modulationscheme and code rate that have lower spectrum efficiency, wherein whenthe latest CQI is based on the second CQI table and that CQI has a valueindicating an out-of-range state, the current CQI will trigger feedbackof another CQI based on the third CQI table; the second CQI tablecomprises two out-of-range states: a state lower than a combination ofmodulation scheme and code rate associated with the lowest spectrumefficiency, and a state higher than a combination of modulation schemeand code rate associated with the highest spectrum efficiency; any pairof neighboring ones from N1 consecutive combinations of modulationscheme and code rate in the second CQI table has a higher spectrumefficiency ratio than all pairs of neighboring ones from N2 consecutivecombinations of modulation scheme and code rate in the first CQI table,where N1 and N2 are each an integer larger than or equal to 2; or eachpair of neighboring ones from N3 consecutive combinations of modulationscheme and code rate in the middle of the second CQI table has a lowerspectrum efficiency ratio than all pairs of neighboring ones from thefirst N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to
 2. 17. The apparatus of claim 14,wherein the CQI table comprises a first CQI table, a fourth CQI tableand a fifth CQI table, wherein the fourth CQI table and the fifth CQItable comprise one of the following combinations: the fourth CQI tablehas 2^(x) values, each CQI in the fourth CQI table is represented by xbits, L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table, and the first L2 combinations of modulationscheme and code rate in the fourth CQI table are combinations of QPSKand code rate r, where L1 and L2 are each a positive integer larger than1, r is a real number smaller than 78/1024, L1+L2≤15, and x≤4; the fifthCQI table has 2^(y) values, each CQI in the fifth CQI table isrepresented by y bits, L3 combinations of modulation scheme and coderate other than L4 combinations of modulation scheme and code rate inthe fourth CQI table are used as the last L3 combinations of modulationscheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableare combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L3+L4≤15, and y≤4; the fourth CQI table has 2^(x) values, each CQI inthe fourth CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the fourth CQI table,and the first L2 combinations of modulation scheme and code rate in thefourth CQI table are combinations of BPSK and code rate r, where L1 andL2 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values,each CQI in the fifth CQI table is represented by y bits, L3combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table, and the first L4 combinations of modulationscheme and code rate in the fifth CQI table are combinations of BPSK andcode rate r, where L3 and L4 are each a positive integer larger than 1,r is a real number smaller than 156/1024, L3+L4≤15, and y≤4; the fourthCQI table has 2^(x) values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tablecomprise L21 combinations of BPSK and code rate r and L22 combinationsof QPSK and code rate r, where L1 and L2 are each a positive integerlarger than 1, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable comprise L41 combinations of BPSK and code rate r and L42combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, L2=L41+L42, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4; or the first CQI table comprises L1combinations of modulation scheme and code rate, the fourth CQI tablecomprises L2 combinations of modulation scheme and code rate, the fifthCQI table comprises L2 combinations of modulation scheme and code rate,where L1 and L2 are each an integer larger than or equal to 7 andL2<L1/2, all the combinations of modulation scheme and code rate in thefourth CQI table and all the combinations of modulation scheme and coderate in the fifth CQI table are each a subset of all the combinations ofmodulation scheme and code rate in the first CQI table, and wherein thefirst CQI table comprises at least one of: a CQI table having modulationorder of up to 64, a CQI table having modulation order of up to 16, or a4-bit CQI table in Long Term Evolution (LTE) Release
 8. 18. Theapparatus of claim 17, wherein the fourth CQI table and the fifth CQItable have at least one of the following characteristics: a minimumvalue of code rate in the fifth CQI table is smaller than a minimumvalue of code rate in the fourth CQI table; the minimum value of coderate in the fifth CQI table is smaller than or equal to 1/1024; theminimum value of code rate in the fourth CQI table is smaller than orequal to 1/1024; the fourth CQI table comprises a combination of QPSKand r=449/1024; the fourth CQI table comprises all combinations of QPSKand code rate in the first CQI table; the fifth CQI table comprises noneof the combinations of QPSK and code rate in the first CQI table; thefifth CQI table comprises all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table; thefourth CQI table comprises at least one combination of 16QAM and coderate in the first CQI table; among spectrum efficiency ratios for allpairs of neighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe fourth CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when acurrent CQI or the latest CQI is based on the first CQI table and thatCQI has a value indicating an out-of-range state, the current CQI willtrigger feedback of another CQI based on the fourth CQI table; or whenthe current CQI or the latest CQI is based on the fourth CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fifth CQI table. 19.An apparatus for transmitting Channel Quality Indication (CQI)information, comprising: a second receiving module configured to receivea higher layer configuration signaling message transmitted from a basestation; a determining module configured to determine CQI informationbased on a CQI table obtained based on the higher layer configurationsignaling message; and a second transmitting module configured totransmit the determined CQI information to the base station.
 20. Theapparatus of claim 19, wherein the higher layer configuration signalingmessage comprises at least one of the following information: a coveragelevel signaling, a number of subframes occupied by Channel StateInformation (CSI) reference resource, a number of repetitions for adownlink control channel, a number of repetitions for a downlink datashared channel, a number of repetitions for a Physical Random AccessChannel (PRACH), a CQI table selection signaling, a category ofterminal, a scenario indication signaling, a frequency band indicationsignaling, or channel coding type indication information, wherein thecoverage level signaling indicates a coverage level comprising one of:normal coverage or enhanced coverage; normal coverage, moderate coverageor deep coverage; or normal coverage, low enhanced coverage, moderateenhanced coverage or high enhanced coverage; the scenario indicationsignaling indicates an enhanced Mobile Broad-Band (eMBB) scenario, anUltra Reliable Low Latency Communications (URLLC) scenario or a massiveMachine Type Communications (mMTC) scenario; the frequency bandindication signaling indicates different ranges of carrier frequencies;and the channel coding type indication information indicates differentchannel coding types comprising any two of: Low Density Parity Check(LDPC) code, turbo code, convolutional code or polar code.
 21. Theapparatus of claim 20, wherein the CQI table comprises a first CQI tableand a second CQI table, wherein the second CQI table has at least one ofthe following characteristics: the second CQI table has 2^(x) values,each CQI in the second CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations ofQuadrature Phase Shift Keying (QPSK) and code rate r, where L1 and L2are each an integer larger than or equal to 0, r is a real numbersmaller than 78/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, L1combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the second CQI table, and the first L2 combinations of modulationscheme and code rate in the second CQI table are combinations of BinaryPhase Shift Keying (BPSK) and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, r is a real number smaller than156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x) values, eachCQI in the second CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the second CQI table,and the first L2 combinations of modulation scheme and code rate in thesecond CQI table comprise L21 combinations of BPSK and code rate r andL22 combinations of QPSK and code rate r, where L1 and L2 are each aninteger larger than or equal to 0, L2=L21+L22, r is a real numbersmaller than 156/1024, L1+L2≤15, and x≤4; the second CQI table has 2^(x)values, each CQI in the second CQI table is represented by x bits, thefirst CQI table comprises in total L1 combinations of modulation schemeand code rate, the L1 combinations of modulation scheme and code rateare used as the first or last L1 combinations of modulation scheme andcode rate in the second CQI table, and the remaining L2 combinations ofmodulation scheme and code rate in the second CQI table comprise L21type-1 combinations of BPSK and code rate r and L22 type-2 combinationsof QPSK and code rate r, where L1 and L2 are each an integer larger than0, L21 and L22 are each an integer larger than or equal to 0,L2=L21+L22, r is a real number smaller than 156/1024, L1+L2≤15, and x≤4;the first CQI table comprises in total L1 combinations of modulationscheme and code rate, the second CQI table comprises in total L2combinations of modulation scheme and code rate, the L2 combinations area subset of the L1 combinations, where 8≤L1≤15, L2≤7, L1 and L2 are eachan integer larger than 0, wherein a modulation scheme of the highestorder in the first CQI table is 64 Quadrature Amplitude Modulation (QAM)and a modulation scheme of the highest order in the second CQI table is16QAM; or the first CQI table and the second CQI table comprise in totalL1=7 combinations of modulation scheme and code rate, the modulationschemes in the first CQI table comprise QPSK and 16QAM, and themodulation schemes in the second CQI table comprise QPSK and/or BPSK,the second CQI table comprises at least two of the first, third, fifthand seventh combinations in the first CQI table, or at least two of thesecond, fourth, sixth combinations in the first CQI table, and whereinthe first CQI table comprises at least one of: a CQI table havingmodulation order of up to 64, a CQI table having modulation order of upto 16, or a 4-bit CQI table in Long Term Evolution (LTE) Release
 8. 22.The apparatus of claim 21, wherein the second CQI table has at least oneof the following characteristics: a minimum value of r is smaller than1/1024; the minimum value of r equals to 1/2048, 1/4096 or 1/3072; acombination of QPSK and r=449/1024 is excluded; the second CQI tablecomprises all combinations of QPSK and code rate, other than acombination of QPSK and r=449/1024, in the first CQI table; the secondCQI table comprises one combination of 16QAM and code rate in the firstCQI table; the second CQI table comprises one of a combination of 16QAMand a code rate of 490/1024 and a combination of 16QAM and a code rateof 616/1024; among spectrum efficiency ratios for all pairs ofneighboring combinations in the second CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe second CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the second CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when thelatest CQI is based on the first CQI table and that CQI has a valueindicating an out-of-range state, a current CQI will trigger feedback ofanother CQI based on the second CQI table; the CQI table furthercomprises a third CQI table consisting of combinations of modulationscheme and code rate that have lower spectrum efficiency, wherein whenthe latest CQI is based on the second CQI table and that CQI has a valueindicating an out-of-range state, the current CQI will trigger feedbackof another CQI based on the third CQI table; the second CQI tablecomprises two out-of-range states: a state lower than a combination ofmodulation scheme and code rate associated with the lowest spectrumefficiency, and a state higher than a combination of modulation schemeand code rate associated with the highest spectrum efficiency; any pairof neighboring ones from N1 consecutive combinations of modulationscheme and code rate in the second CQI table has a higher spectrumefficiency ratio than all pairs of neighboring ones from N2 consecutivecombinations of modulation scheme and code rate in the first CQI table,where N1 and N2 are each an integer larger than or equal to 2; or eachpair of neighboring ones from N3 consecutive combinations of modulationscheme and code rate in the middle of the second CQI table has a lowerspectrum efficiency ratio than all pairs of neighboring ones from thefirst N4 consecutive combinations and the last N5 consecutivecombinations in the second CQI table, where N3, N4 and N5 are each aninteger larger than or equal to
 2. 23. The apparatus of claim 20,wherein the CQI table comprises a first CQI table, a fourth CQI tableand a fifth CQI table, wherein the fourth CQI table and the fifth CQItable comprise one of the following combinations: the fourth CQI tablehas 2^(x) values, each CQI in the fourth CQI table is represented by xbits, L1 combinations of modulation scheme and code rate other than L2combinations of modulation scheme and code rate in the first CQI tableare used as the last L1 combinations of modulation scheme and code ratein the fourth CQI table, and the first L2 combinations of modulationscheme and code rate in the fourth CQI table are combinations of QPSKand code rate r, where L1 and L2 are each a positive integer larger than1, r is a real number smaller than 78/1024, L1+L2≤15, and x≤4; the fifthCQI table has 2^(y) values, each CQI in the fifth CQI table isrepresented by y bits, L3 combinations of modulation scheme and coderate other than L4 combinations of modulation scheme and code rate inthe fourth CQI table are used as the last L3 combinations of modulationscheme and code rate in the fifth CQI table, and the first L4combinations of modulation scheme and code rate in the fifth CQI tableare combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, r is a real number smaller than 78/1024,L3+L4≤15, and y≤4; the fourth CQI table has 2^(x) values, each CQI inthe fourth CQI table is represented by x bits, L1 combinations ofmodulation scheme and code rate other than L2 combinations of modulationscheme and code rate in the first CQI table are used as the last L1combinations of modulation scheme and code rate in the fourth CQI table,and the first L2 combinations of modulation scheme and code rate in thefourth CQI table are combinations of BPSK and code rate r, where L1 andL2 are each a positive integer larger than 1, r is a real number smallerthan 156/1024, L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values,each CQI in the fifth CQI table is represented by y bits, L3combinations of modulation scheme and code rate other than L4combinations of modulation scheme and code rate in the fourth CQI tableare used as the last L3 combinations of modulation scheme and code ratein the fifth CQI table, and the first L4 combinations of modulationscheme and code rate in the fifth CQI table are combinations of BPSK andcode rate r, where L3 and L4 are each a positive integer larger than 1,r is a real number smaller than 156/1024, L3+L4≤15, and y≤4; the fourthCQI table has 2^(x) values, each CQI in the fourth CQI table isrepresented by x bits, L1 combinations of modulation scheme and coderate other than L2 combinations of modulation scheme and code rate inthe first CQI table are used as the last L1 combinations of modulationscheme and code rate in the fourth CQI table, and the first L2combinations of modulation scheme and code rate in the fourth CQI tablecomprise L21 combinations of BPSK and code rate r and L22 combinationsof QPSK and code rate r, where L1 and L2 are each a positive integerlarger than 1, L2=L21+L22, r is a real number smaller than 156/1024,L1+L2≤15, and x≤4; the fifth CQI table has 2^(y) values, each CQI in thefifth CQI table is represented by y bits, L3 combinations of modulationscheme and code rate other than L4 combinations of modulation scheme andcode rate in the fourth CQI table are used as the last L3 combinationsof modulation scheme and code rate in the fifth CQI table, and the firstL4 combinations of modulation scheme and code rate in the fifth CQItable comprise L41 combinations of BPSK and code rate r and L42combinations of QPSK and code rate r, where L3 and L4 are each apositive integer larger than 1, L2=L41+L42, r is a real number smallerthan 156/1024, L3+L4≤15, and y≤4; or the first CQI table comprises L1combinations of modulation scheme and code rate, the fourth CQI tablecomprises L2 combinations of modulation scheme and code rate, the fifthCQI table comprises L2 combinations of modulation scheme and code rate,where L1 and L2 are each an integer larger than or equal to 7 andL2<L1/2, all the combinations of modulation scheme and code rate in thefourth CQI table and all the combinations of modulation scheme and coderate in the fifth CQI table are each a subset of all the combinations ofmodulation scheme and code rate in the first CQI table, and wherein thefirst CQI table comprises at least one of: a CQI table having modulationorder of up to 64, a CQI table having modulation order of up to 16, or a4-bit CQI table in Long Term Evolution (LTE) Release
 8. 24. Theapparatus of claim 23, wherein the fourth CQI table and the fifth CQItable have at least one of the following characteristics: a minimumvalue of code rate in the fifth CQI table is smaller than a minimumvalue of code rate in the fourth CQI table; the minimum value of coderate in the fifth CQI table is smaller than or equal to 1/1024; theminimum value of code rate in the fourth CQI table is smaller than orequal to 1/1024; the fourth CQI table comprises a combination of QPSKand r=449/1024; the fourth CQI table comprises all combinations of QPSKand code rate in the first CQI table; the fifth CQI table comprises noneof the combinations of QPSK and code rate in the first CQI table; thefifth CQI table comprises all combinations of QPSK and code rate thatare included in the fourth CQI table but not in the first CQI table; thefourth CQI table comprises at least one combination of 16QAM and coderate in the first CQI table; among spectrum efficiency ratios for allpairs of neighboring combinations in the fourth CQI table, the spectrumefficiency ratio for the pair of the last combination and the last butone combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination, is the highest; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the last combination and thelast but one combination and the spectrum efficiency ratio for the pairof the second combination and the first combination, are higher than thespectrum efficiency ratios for other pairs of combinations; amongspectrum efficiency ratios for all pairs of neighboring combinations inthe fourth CQI table, the spectrum efficiency ratio for the pair of thelast combination and the last but one combination and the spectrumefficiency ratio for the pair of the last but two combination and thelast but one combination, are higher than the spectrum efficiency ratiosfor other pairs of combinations; among spectrum efficiency ratios forall pairs of neighboring combinations in the fourth CQI table, thespectrum efficiency ratio for the pair of the second combination and thefirst combination and the spectrum efficiency ratio for the pair of thethird combination and the second combination, are higher than thespectrum efficiency ratios for other pairs of combinations; when acurrent CQI or the latest CQI is based on the first CQI table and thatCQI has a value indicating an out-of-range state, the current CQI willtrigger feedback of another CQI based on the fourth CQI table; or whenthe current CQI or the latest CQI is based on the fourth CQI table andthat CQI has a value indicating an out-of-range state, the current CQIwill trigger feedback of another CQI based on the fifth CQI table.